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In accordance with the instructions to Form 4, my holdings of Class A Common Stock are reportable in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On October 5, 2023, I donated 77 shares of Class A Common Stock to the Henry E. Huntington Library and Art Gallery."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of Class A Common Stock are reportable in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  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In accordance with the instructions to Form 4, my holdings of Class A Common Stock are reportable in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On March 9, 2023, I donated 60 shares of Class A Common Stock to the Alfred C. Munger Foundation."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  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In accordance with the instructions to Form 4, my holdings of Class A Common Stock are reportable in Table II."}],"balance_after":4110,"derivative":{"underlying":"See footnote (1)"},"source":{"system":"sec-edgar","filing":"0001209191-23-045935","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919123045935/doc4.xml","form_type":"4"}},{"id":62424,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-10-25T20:02:15.000Z","date":"2022-10-22","kind":"grant","acquired":true,"shares":565,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On May 16, 2022, I donated 100 shares of Class A Common Stock to The Alfred C. Munger Foundation."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On December 22, 2021, I donated 100 shares of Class A Common Stock to The Alfred C. Munger Foundation."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4270,"derivative":{"underlying":"See footnote"},"source":{"system":"sec-edgar","filing":"0001209191-22-002576","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919122002576/doc4.xml","form_type":"4"}},{"id":78453,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-10-26T20:06:40.000Z","date":"2021-10-22","kind":"grant","acquired":true,"shares":561,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On September 10, 2021, I donated 40 shares of Class A Common Stock to The Alfred C. Munger Foundation."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4370,"derivative":{"underlying":"See footnote"},"source":{"system":"sec-edgar","filing":"0001209191-21-056883","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919121056883/doc4.xml","form_type":"4"}},{"id":88995,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2021-05-03T21:10:02.000Z","date":"2021-04-26","kind":"gift","acquired":false,"shares":40,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4410,"derivative":{"underlying":"See footnote"},"source":{"system":"sec-edgar","filing":"0001209191-21-029522","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919121029522/doc4.xml","form_type":"4"}},{"id":89716,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2021-04-12T20:34:56.000Z","date":"2021-04-07","kind":"gift","acquired":false,"shares":8,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F4","text":"On April 7, 2021, I donated 8 shares of Class A Common Stock to Harvard Westlake School."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F3","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F3","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. 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The adjustment was required under applicable plan documents. The additional RSUs reported are subject to the same vesting schedules as the original unvested RSUs to which they relate."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On September 22, 2020, I donated 20 shares of Class A Common Stock to the Alfred C. Munger Foundation."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4498,"derivative":{"underlying":"See footnote"},"source":{"system":"sec-edgar","filing":"0001209191-20-052149","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919120052149/doc4.xml","form_type":"4"}},{"id":103847,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2020-06-17T20:45:46.000Z","date":"2020-06-15","kind":"gift","acquired":false,"shares":20,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the\ninstructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On June 15, 2020, I donated 20 shares of Class A Common Stock to the Alfred C. Munger Foundation."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the\ninstructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the\ninstructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4518,"derivative":{"underlying":"See footnote"},"source":{"system":"sec-edgar","filing":"0001209191-20-037283","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919120037283/doc4.xml","form_type":"4"}},{"id":111558,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-24T22:31:21.000Z","date":"2019-10-22","kind":"grant","acquired":true,"shares":901,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units. Vests one-third on October 22, 2020, and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. 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Vests one-third on October 22, 2019, and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On September 26, 2018, I donated 214 shares of Class A Common Stock to the University of California, Santa Barbara."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4538,"derivative":{"underlying":"See Footnote"},"source":{"system":"sec-edgar","filing":"0001209191-18-052542","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919118052542/doc4.xml","form_type":"4"}},{"id":127638,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2018-06-18T18:44:23.000Z","date":"2018-06-01","kind":"gift","acquired":false,"shares":26,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On June 1, 2018, I donated 26 shares of Class A Common Stock to Harvard Law School."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4752,"derivative":{"underlying":"See Footnote"},"source":{"system":"sec-edgar","filing":"0001209191-18-038259","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919118038259/doc4.xml","form_type":"4"}},{"id":131568,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2018-02-28T19:50:36.000Z","date":"2018-02-26","kind":"gift","acquired":false,"shares":67,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On February 26, 2018, I donated 67 shares of Class A Common Stock to Good Samaritan Hospital."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4778,"derivative":{"underlying":"See Footnote"},"source":{"system":"sec-edgar","filing":"0001209191-18-014397","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919118014397/doc4.xml","form_type":"4"}},{"id":134497,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2017-12-11T22:58:16.000Z","date":"2017-11-03","kind":"gift","acquired":false,"shares":18,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On November 3, 2017, I donated 18 shares of Class A Common Stock to Harvard-Westlake School."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On June 26, 2017, I donated 20 shares of Class A Common Stock to Harvard-Westlake School."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4863,"derivative":{"underlying":"See Footnote"},"source":{"system":"sec-edgar","filing":"0001209191-17-046018","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919117046018/doc4.xml","form_type":"4"}},{"id":140143,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-05-26T01:46:13.000Z","date":"2017-05-24","kind":"grant","acquired":true,"shares":140,"price":173.01,"value":24221.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents additional restricted stock units (\"RSUs\") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.032, in connection with the special cash dividend to be paid by the issuer on May 26, 2017. The adjustment was required under applicable plan documents. 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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On December 23, 2016, I donated 21 shares of Class A Common Stock to Harvard-Westlake School."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not Applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not Applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not Applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  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In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On December 23, 2016, I donated 21 shares of Class A Common Stock to Harvard-Westlake School."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not Applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not Applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not Applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4883,"derivative":{"underlying":"See footnote"},"source":{"system":"sec-edgar","filing":"0001209191-17-003280","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1067983/000120919117003280/doc4.xml","form_type":"4"}},{"id":147849,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-10-24T18:48:37.000Z","date":"2016-10-22","kind":"grant","acquired":true,"shares":2182,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units. Vests one-third on October 22, 2017, and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":161836,"source":{"system":"sec-edgar","filing":"0001209191-16-146699","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919116146699/doc4.xml","form_type":"4"}},{"id":160245,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2015-10-26T22:55:09.000Z","date":"2015-10-22","kind":"grant","acquired":true,"shares":2150,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units. Vests one-third on October 22, 2016, and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":159654,"source":{"system":"sec-edgar","filing":"0001209191-15-076807","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919115076807/doc4.xml","form_type":"4"}},{"id":165828,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2015-03-10T22:17:03.000Z","date":"2015-03-06","kind":"exercise","acquired":false,"shares":6734,"price":39.02,"value":262760.68,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":39.02,"exercise_date":"2005-04-01","expiration_date":"2015-04-01","underlying":"Common Stock","underlying_shares":6734},"source":{"system":"sec-edgar","filing":"0001209191-15-024829","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919115024829/doc4.xml","form_type":"4"}},{"id":165827,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2015-03-10T22:17:03.000Z","date":"2015-03-06","kind":"exercise","acquired":true,"shares":6734,"price":39.02,"value":262760.68,"ownership":{"direct":true},"balance_after":157504,"source":{"system":"sec-edgar","filing":"0001209191-15-024829","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919115024829/doc4.xml","form_type":"4"}},{"id":166065,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2015-03-03T23:25:22.000Z","date":"2015-02-27","kind":"grant","acquired":true,"shares":6734,"price":39.02,"value":262760.68,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"This option was most recently reported as an option covering 6,457 shares at an exercise price of $40.69 per share and has been adjusted with a lower exercise price and an increased number of options, in connection with the dividend referenced in note 1.  The number of outstanding option was increased by a factor of 1.042 and the option exercise price was reduced by dividing the price by that same factor.  The adjustment was required under the governing plan documents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option is fully vested."}],"balance_after":6734,"derivative":{"exercise_price":39.02,"exercise_date":"2005-04-01","expiration_date":"2015-04-01","underlying":"Common Stock","underlying_shares":6734},"source":{"system":"sec-edgar","filing":"0001209191-15-021719","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919115021719/doc4.xml","form_type":"4"}},{"id":166064,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2015-03-03T23:25:22.000Z","date":"2015-02-27","kind":"grant","acquired":true,"shares":216,"price":146.96,"value":31743.36,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents additional restricted stock units (\"RSUs\") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.042 in connection with the $5.00 per share special cash dividend payable by the issuer to shareholders of record on February 27, 2015.  The adjustment was required under the plan documents governing the grants. The RSUs reported are subject to the same vesting schedules as the original RSUs to which they relate."}],"balance_after":150770,"source":{"system":"sec-edgar","filing":"0001209191-15-021719","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919115021719/doc4.xml","form_type":"4"}},{"id":169333,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2014-11-03T18:36:02.000Z","date":"2014-10-16","kind":"gift","acquired":false,"shares":220,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F4","text":"On October 16, 2014, I donated 220 shares of Class A Common Stock to the Trust."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":4904,"derivative":{"underlying":"See footnote"},"source":{"system":"sec-edgar","filing":"0001181431-14-035304","document":"rrd417844.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143114035304/rrd417844.xml","form_type":"4"}},{"id":169332,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2014-11-03T18:36:02.000Z","date":"2014-09-12","kind":"gift","acquired":false,"shares":100,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On September 12, 2014, I donated 100 shares of Class A Common Stock to the Munger UCSB Charitable Trust (the \"Trust\").  The Trust was created for the purpose of designing and constructing a residence for visiting physicists at the University of California, Santa Barbara."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":5124,"derivative":{"underlying":"See footnote"},"source":{"system":"sec-edgar","filing":"0001181431-14-035304","document":"rrd417844.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143114035304/rrd417844.xml","form_type":"4"}},{"id":169617,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2014-10-23T19:18:31.000Z","date":"2014-10-22","kind":"grant","acquired":true,"shares":2400,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units. Vests one-third on October 22, 2015 and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":150554,"source":{"system":"sec-edgar","filing":"0001209191-14-064454","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919114064454/doc4.xml","form_type":"4"}},{"id":175927,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2014-02-26T19:18:18.000Z","date":"2014-02-19","kind":"gift","acquired":false,"shares":100,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On February 19, 2014, I donated 100 shares of Class A Common Stock to Harvard-Westlake School."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable"},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":5224,"derivative":{"underlying":"See footnote (1)"},"source":{"system":"sec-edgar","filing":"0001181431-14-009560","document":"rrd403582.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143114009560/rrd403582.xml","form_type":"4"}},{"id":177682,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2014-01-17T18:01:44.000Z","date":"2014-01-15","kind":"exercise","acquired":false,"shares":6457,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":34.71,"exercise_date":"2004-04-01","expiration_date":"2014-04-01","underlying":"Common Stock","underlying_shares":6457},"source":{"system":"sec-edgar","filing":"0001209191-14-003650","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919114003650/doc4.xml","form_type":"4"}},{"id":177681,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2014-01-17T18:01:44.000Z","date":"2014-01-15","kind":"exercise","acquired":true,"shares":6457,"price":34.71,"value":224122.47,"ownership":{"direct":true},"balance_after":148154,"source":{"system":"sec-edgar","filing":"0001209191-14-003650","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919114003650/doc4.xml","form_type":"4"}},{"id":180019,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2013-10-23T22:45:10.000Z","date":"2013-10-22","kind":"grant","acquired":true,"shares":2400,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units. Vests one-third on October 22, 2014 and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":141697,"source":{"system":"sec-edgar","filing":"0001209191-13-049087","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919113049087/doc4.xml","form_type":"4"}},{"id":180180,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2013-10-17T19:12:48.000Z","date":"2013-10-14","kind":"gift","acquired":false,"shares":30,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table\nII."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On October 11, 2013, I donated 320 shares of Class A Common Stock to the Regents of the University of Michigan.  On October 14, 2013, I donated 30 shares of Class A Common Stock to the Regents of the University of Michigan.  These gifts were made pursuant to a previously announced pledge, which has now been fully satisfied."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table\nII."}],"balance_after":5324,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-13-054326","document":"rrd392862.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143113054326/rrd392862.xml","form_type":"4"}},{"id":180179,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2013-10-17T19:12:48.000Z","date":"2013-10-11","kind":"gift","acquired":false,"shares":320,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table\nII."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On October 11, 2013, I donated 320 shares of Class A Common Stock to the Regents of the University of Michigan.  On October 14, 2013, I donated 30 shares of Class A Common Stock to the Regents of the University of Michigan.  These gifts were made pursuant to a previously announced pledge, which has now been fully satisfied."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table\nII."}],"balance_after":5354,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-13-054326","document":"rrd392862.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143113054326/rrd392862.xml","form_type":"4"}},{"id":183420,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2013-06-10T16:58:27.000Z","date":"2013-05-29","kind":"gift","acquired":false,"shares":11,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On May 29, 2013, I donated 189 shares of Class A Common Stock to the Henry E. Huntington Library and Art Gallery.  Also on May 29, 2013, I donated 11 shares of Class A Common Stock to the Marlborough School."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":5674,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-13-033869","document":"rrd381833.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143113033869/rrd381833.xml","form_type":"4"}},{"id":183419,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2013-06-10T16:58:27.000Z","date":"2013-05-29","kind":"gift","acquired":false,"shares":189,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On May 29, 2013, I donated 189 shares of Class A Common Stock to the Henry E. Huntington Library and Art Gallery.  Also on May 29, 2013, I donated 11 shares of Class A Common Stock to the Marlborough School."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":5685,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-13-033869","document":"rrd381833.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143113033869/rrd381833.xml","form_type":"4"}},{"id":184296,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2013-05-13T19:55:56.000Z","date":"2013-04-24","kind":"gift","acquired":false,"shares":350,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On April 24, 2013, I donated 350 shares of Class A Common Stock to the Regents of the University of Michigan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":5874,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-13-027468","document":"rrd379152.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143113027468/rrd379152.xml","form_type":"4"}},{"id":187070,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2013-02-13T23:16:02.000Z","date":"2013-02-13","kind":"exercise","acquired":false,"shares":6457,"price":28.26,"value":182474.82,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":28.26,"exercise_date":"2004-04-01","expiration_date":"2013-04-01","underlying":"Common Stock","underlying_shares":6457},"source":{"system":"sec-edgar","filing":"0001209191-13-008565","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919113008565/doc4.xml","form_type":"4"}},{"id":187069,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2013-02-13T23:16:02.000Z","date":"2013-02-13","kind":"exercise","acquired":true,"shares":6457,"price":28.26,"value":182474.82,"ownership":{"direct":true},"balance_after":139297,"source":{"system":"sec-edgar","filing":"0001209191-13-008565","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919113008565/doc4.xml","form_type":"4"}},{"id":188428,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2013-01-14T16:44:45.000Z","date":"2012-12-21","kind":"gift","acquired":false,"shares":11,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 5, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On December 21, 2012, I donated 11 shares of Class A Common Stock to the Henry E. Huntington Library and Art Gallery."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 5, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6224,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-13-003120","document":"rrd366497.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143113003120/rrd366497.xml","form_type":"5"}},{"id":189030,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2012-12-13T23:35:43.000Z","date":"2012-12-12","kind":"grant","acquired":true,"shares":6457,"price":40.69,"value":262735.33,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"This option was previously reported as an option covering 6,000 shares at an exercise price of $43.79 per share and has been adjusted with a lower exercise price and an increased number of options, in connection with the dividend referenced in note 1.  The number of outstanding options was increased by a factor of 1.0763, and the option exercise price was reduced by dividing the price by that same factor.  The adjustment was required under the governing plan documents."},{"field":"shares","element":"transactionShares","label":"F5","text":"This option was previously reported as an option covering 6,000 shares at an exercise price of $43.79 per share and has been adjusted with a lower exercise price and an increased number of options, in connection with the dividend referenced in note 1.  The number of outstanding options was increased by a factor of 1.0763, and the option exercise price was reduced by dividing the price by that same factor.  The adjustment was required under the governing plan documents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option is fully vested."}],"balance_after":6457,"derivative":{"exercise_price":40.69,"exercise_date":"2005-04-01","expiration_date":"2015-04-01","underlying":"Common Stock","underlying_shares":6457},"source":{"system":"sec-edgar","filing":"0001209191-12-057550","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112057550/doc4.xml","form_type":"4"}},{"id":189029,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2012-12-13T23:35:43.000Z","date":"2012-12-12","kind":"grant","acquired":true,"shares":6457,"price":34.71,"value":224122.47,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"This option was previously reported as an option covering 6,000 shares at an exercise price of $37.35 per share and has been adjusted with a lower exercise price and an increased number of options, in connection with the dividend referenced in note 1.  The number of outstanding options was increased by a factor of 1.0763, and the option exercise price was reduced by dividing the price by that same factor.  The adjustment was required under the governing plan documents."},{"field":"shares","element":"transactionShares","label":"F4","text":"This option was previously reported as an option covering 6,000 shares at an exercise price of $37.35 per share and has been adjusted with a lower exercise price and an increased number of options, in connection with the dividend referenced in note 1.  The number of outstanding options was increased by a factor of 1.0763, and the option exercise price was reduced by dividing the price by that same factor.  The adjustment was required under the governing plan documents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option is fully vested."}],"balance_after":6457,"derivative":{"exercise_price":34.71,"exercise_date":"2004-04-01","expiration_date":"2014-04-01","underlying":"Common Stock","underlying_shares":6457},"source":{"system":"sec-edgar","filing":"0001209191-12-057550","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112057550/doc4.xml","form_type":"4"}},{"id":189028,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2012-12-13T23:35:43.000Z","date":"2012-12-12","kind":"grant","acquired":true,"shares":6457,"price":28.26,"value":182474.82,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"This option was previously reported as an option covering 6,000 shares at an exercise price of $30.41 per share and has been adjusted with a lower exercise price and an increased number of options, in connection with the dividend referenced in note 1.  The number of outstanding options was increased by a factor of 1.0763, and the option exercise price was reduced by dividing the price by that same factor.  The adjustment was required under the governing plan documents."},{"field":"shares","element":"transactionShares","label":"F2","text":"This option was previously reported as an option covering 6,000 shares at an exercise price of $30.41 per share and has been adjusted with a lower exercise price and an increased number of options, in connection with the dividend referenced in note 1.  The number of outstanding options was increased by a factor of 1.0763, and the option exercise price was reduced by dividing the price by that same factor.  The adjustment was required under the governing plan documents."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option is fully vested."}],"balance_after":6457,"derivative":{"exercise_price":28.26,"exercise_date":"2003-04-01","expiration_date":"2013-04-01","underlying":"Common Stock","underlying_shares":6457},"source":{"system":"sec-edgar","filing":"0001209191-12-057550","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112057550/doc4.xml","form_type":"4"}},{"id":189027,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2012-12-13T23:35:43.000Z","date":"2012-12-12","kind":"grant","acquired":true,"shares":456,"price":98.31,"value":44829.36,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents additional restricted stock units (\"RSUs\") resulting from the upward adjustment of outstanding unvested RSUs by a factor of 1.0763 in connection with the $7.00 per share special cash dividend payable by the issuer to shareholders of record on December 10, 2012.  The adjustment was required under the plan documents governing the grants.  The RSUs reported are subject to the same vesting schedules as the original RSUs to which they relate."}],"balance_after":132840,"source":{"system":"sec-edgar","filing":"0001209191-12-057550","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112057550/doc4.xml","form_type":"4"}},{"id":190419,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2012-10-24T21:18:47.000Z","date":"2012-10-22","kind":"grant","acquired":true,"shares":3000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Grant of Restricted Stock Units.  Vests one-third on October 22, 2013 and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":132384,"source":{"system":"sec-edgar","filing":"0001209191-12-050450","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112050450/doc4.xml","form_type":"4"}},{"id":194891,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2012-03-14T18:12:04.000Z","date":"2012-03-09","kind":"exercise","acquired":false,"shares":6000,"price":39.65,"value":237900.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":39.65,"exercise_date":"2002-04-01","expiration_date":"2012-04-01","underlying":"Common Stock","underlying_shares":6000},"source":{"system":"sec-edgar","filing":"0001209191-12-018165","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112018165/doc4.xml","form_type":"4"}},{"id":194890,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2012-03-14T18:12:04.000Z","date":"2012-03-09","kind":"exercise","acquired":true,"shares":6000,"price":39.65,"value":237900.0,"ownership":{"direct":true},"balance_after":129384,"source":{"system":"sec-edgar","filing":"0001209191-12-018165","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919112018165/doc4.xml","form_type":"4"}},{"id":195173,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2012-03-02T14:25:49.000Z","date":"2012-02-21","kind":"gift","acquired":false,"shares":158,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On February 21, 2012, I donated 158 shares of Class A Common Stock to the Regents of the University of Michigan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6235,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-12-013752","document":"rrd336110.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143112013752/rrd336110.xml","form_type":"4"}},{"id":197105,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2012-01-10T15:09:43.000Z","date":"2011-12-28","kind":"gift","acquired":false,"shares":10,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On December 28, 2011, I donated 10 shares of Class A Common Stock to the Regents of the University of Michigan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6393,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-12-002060","document":"rrd330246.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143112002060/rrd330246.xml","form_type":"4"}},{"id":198593,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2011-10-24T22:46:07.000Z","date":"2011-10-22","kind":"grant","acquired":true,"shares":3000,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Vests one-third on October 22, 2012 and one-third annually on October 22 for the following two years."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Not applicable. Grant of Restricted Stock Units."}],"balance_after":123384,"source":{"system":"sec-edgar","filing":"0001209191-11-052527","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919111052527/doc4.xml","form_type":"4"}},{"id":204547,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option","published_at":"2011-03-23T15:31:30.000Z","date":"2011-03-21","kind":"exercise","acquired":false,"shares":6000,"price":36.1875,"value":217125.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":36.1875,"exercise_date":"2001-04-02","expiration_date":"2011-04-02","underlying":"Common Stock","underlying_shares":60000},"source":{"system":"sec-edgar","filing":"0001209191-11-019334","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919111019334/doc4.xml","form_type":"4"}},{"id":204546,"issuer":{"id":2803,"kind":"organization","name":"COSTCO WHOLESALE CORP /NEW","symbol":"COST"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2011-03-23T15:31:30.000Z","date":"2011-03-21","kind":"exercise","acquired":true,"shares":6000,"price":36.1875,"value":217125.0,"ownership":{"direct":true},"balance_after":120384,"source":{"system":"sec-edgar","filing":"0001209191-11-019334","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/909832/000120919111019334/doc4.xml","form_type":"4"}},{"id":208585,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2011-01-10T17:13:13.000Z","date":"2010-12-22","kind":"gift","acquired":false,"shares":25,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"kind","element":"transactionCoding","label":"F2","text":"On December 22, 2010, I donated 25 shares of Class A Common Stock to the Henry E. Huntington Library and Art Gallery."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Not applicable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock. In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6403,"derivative":{"underlying":"See footnote 1."},"source":{"system":"sec-edgar","filing":"0001181431-11-002802","document":"rrd296814.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143111002802/rrd296814.xml","form_type":"4"}},{"id":209408,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118780.8,"value":118780.8,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6428,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209407,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118691.3,"value":118691.3,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6429,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209406,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":2,"price":118705,"value":237410.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6430,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209405,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118720,"value":118720.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6432,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209404,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":3,"price":118708,"value":356124.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6433,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209403,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118506,"value":118506.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6436,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209402,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":12,"price":118500,"value":1422000.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6437,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209401,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118555,"value":118555.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6449,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209400,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118557,"value":118557.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6450,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209399,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":2,"price":118700,"value":237400.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6451,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209398,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118730,"value":118730.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6453,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209397,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":5,"price":118715,"value":593575.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6454,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209396,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118745,"value":118745.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6459,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209395,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118733,"value":118733.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6460,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209394,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":6,"price":118750,"value":712500.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6461,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209393,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118753,"value":118753.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6467,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209392,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:16:56.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118771,"value":118771.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6468,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057732","document":"rrd292254.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057732/rrd292254.xml","form_type":"4"}},{"id":209437,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":3,"price":118850,"value":356550.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6469,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":30,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209436,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118863,"value":118863.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6472,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":29,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209435,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":2,"price":119100,"value":238200.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6473,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":28,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209434,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":9,"price":119085,"value":1071765.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6475,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":27,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209433,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118710,"value":118710.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6484,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":26,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209432,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118727,"value":118727.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6485,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":25,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209431,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":118754,"value":118754.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6486,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":24,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209430,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119178,"value":119178.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6487,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":23,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209429,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119159,"value":119159.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6488,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":22,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209428,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119204,"value":119204.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6489,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":21,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209427,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":8,"price":119250,"value":954000.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6490,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":20,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209426,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":5,"price":119212.6,"value":596063.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6498,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":19,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209425,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119130,"value":119130.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6503,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209424,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119208.5,"value":119208.5,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6504,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209423,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119310,"value":119310.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6505,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209422,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119415.5,"value":119415.5,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6506,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209421,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":6,"price":119400,"value":716400.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6507,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209420,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":2,"price":119325.9,"value":238651.8,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6513,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209419,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119282,"value":119282.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6515,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}},{"id":209418,"issuer":{"id":2792,"kind":"organization","name":"BERKSHIRE HATHAWAY INC","symbol":"BRK.A"},"owners":[{"id":11468,"kind":"person","name":"MUNGER CHARLES T","position":1,"cik":"0001078511","reported_name":"MUNGER CHARLES T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Vice Chairman"}}],"security":"Class A Common Stock","published_at":"2010-11-26T13:10:45.000Z","date":"2010-11-23","kind":"sale","acquired":false,"shares":1,"price":119303,"value":119303.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Not applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Not applicable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"Each share of Class A Common Stock is convertible at any time at the option of the holder into 1,500 shares of Class B Common Stock.  In accordance with the instructions to Form 4, my holdings of, and transactions in, shares of Class A Common Stock are reported in Table II."}],"balance_after":6516,"derivative":{"underlying":"See footnote 1"},"source":{"system":"sec-edgar","filing":"0001181431-10-057729","document":"rrd292136.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1078511/000118143110057729/rrd292136.xml","form_type":"4"}}],"next_cursor":"2010-11-26T13:10:45.000000Z,209418"}