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Pursuant to the Merger Agreement, at the effective time of the merger, the Market Share Units held by the reporting person became fully vested and were converted into the right to receive a cash payment equal to the product of (i) the number of shares of the Company's common stock earned under such Market Share Unit, determined as of the effective time of the merger by substituting $43.50 for the market value per share, multiplied by (ii) the closing consideration."},{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"These Market Share Units were granted on February 14, 2018 and were originally scheduled to be earned, if at all, once the Board of Directors of the Company certified that pre-determined market price targets of the Company's common stock had been attained, provided that the reporting person remained continuously employed by the Company or a subsidiary through December 31, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Each Market Share Unit represented the right to receive one share of common stock assuming certain market price targets were achieved. 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Pursuant to the Merger Agreement, at the effective time of the merger, the Market Share Units held by the reporting person became fully vested and were converted into the right to receive a cash payment equal to the product of (i) the number of shares of the Company's common stock earned under such Market Share Unit, determined as of the effective time of the merger by substituting $43.50 for the market value per share, multiplied by (ii) the closing consideration."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"These Market Share Units were granted on February 14, 2018 and were originally scheduled to be earned, if at all, once the Board of Directors of the Company certified that pre-determined market price targets of the Company's common stock had been attained, provided that the reporting person remained continuously employed by the Company or a subsidiary through December 31, 2020."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Each Market Share Unit represented the right to receive one share of common stock assuming certain market price targets were achieved. Pursuant to the Merger Agreement, at the effective time of the merger, the Market Share Units held by the reporting person became fully vested and were converted into the right to receive a cash payment equal to the product of (i) the number of shares of the Company's common stock earned under such Market Share Unit, determined as of the effective time of the merger by substituting $43.50 for the market value per share, multiplied by (ii) the closing consideration."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"These Market Share Units were granted on February 14, 2018 and were originally scheduled to be earned, if at all, once the Board of Directors of the Company certified that pre-determined market price targets of the Company's common stock had been attained, provided that the reporting person remained continuously employed by the Company or a subsidiary through December 31, 2020."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F5","text":"Each Market Share Unit represented the right to receive one share of common stock assuming certain market price targets were achieved. 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Pursuant to the Merger Agreement, at the effective time of the merger, the Market Share Units held by the reporting person became fully vested and were converted into the right to receive a cash payment equal to the product of (i) the number of shares of the Company's common stock earned under such Market Share Unit, determined as of the effective time of the merger by substituting $43.50 for the market value per share, multiplied by (ii) the closing consideration."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Each Market Share Unit represented the right to receive one share of common stock assuming certain market price targets were achieved. 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In accordance with elections made by the reporting person under the Directors Deferred Compensation Plan, each common stock unit is the economic equivalent of one share of FuelCell Energy common stock, payable to the reporting person in cash upon separation from service as a director."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Deferred common stock units issued to the reporting person pursuant to the FuelCell Energy, Inc. Directors Deferred Compensation Plan.  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As authorized by the Board, the Chairman of the Compensation and Organization Committee of the Board certified performance of these Market Share Units on December 26, 2018 and the Company issued to the reporting person 1.5 shares of the Company's common stock for the Market Share Units originally granted, based on the closing prices of shares of the Company's common stock on the New York Stock Exchange for the fifteen trading days immediately preceding December 3, 2018."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"As previously disclosed, on November 8, 2018, the Board of Directors (the \"Board\") of USG Corporation (the \"Company\") approved the acceleration of the vesting of 90% of the Market Share Units and Performance Shares granted to the reporting person in 2016, as determined based on achievement of specified performance metrics, that were otherwise scheduled to vest between January 1, 2019 and March 30, 2019. The Board approved the accelerated vesting of such grants in order to mitigate the potential impact of Section 280G of the Internal Revenue Code of 1986, as amended, on the Company and the reporting person in connection with the pending merger of an indirect wholly-owned subsidiary of Gebr. Knauf KG with and into the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"These Market Share Units were granted on February 10, 2016. As authorized by the Board, the Chairman of the Compensation and Organization Committee of the Board certified performance of these Market Share Units on December 26, 2018 and the Company issued to the reporting person 1.5 shares of the Company's common stock for the Market Share Units originally granted, based on the closing prices of shares of the Company's common stock on the New York Stock Exchange for the fifteen trading days immediately preceding December 3, 2018."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"As previously disclosed, on November 8, 2018, the Board of Directors (the \"Board\") of USG Corporation (the \"Company\") approved the acceleration of the vesting of 90% of the Market Share Units and Performance Shares granted to the reporting person in 2016, as determined based on achievement of specified performance metrics, that were otherwise scheduled to vest between January 1, 2019 and March 30, 2019. The Board approved the accelerated vesting of such grants in order to mitigate the potential impact of Section 280G of the Internal Revenue Code of 1986, as amended, on the Company and the reporting person in connection with the pending merger of an indirect wholly-owned subsidiary of Gebr. Knauf KG with and into the Company."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"These Market Share Units were granted on February 10, 2016. As authorized by the Board, the Chairman of the Compensation and Organization Committee of the Board certified performance of these Market Share Units on December 26, 2018 and the Company issued to the reporting person 1.5 shares of the Company's common stock for the Market Share Units originally granted, based on the closing prices of shares of the Company's common stock on the New York Stock Exchange for the fifteen trading days immediately preceding December 3, 2018."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F1","text":"As previously disclosed, on November 8, 2018, the Board of Directors (the \"Board\") of USG Corporation (the \"Company\") approved the acceleration of the vesting of 90% of the Market Share Units and Performance Shares granted to the reporting person in 2016, as determined based on achievement of specified performance metrics, that were otherwise scheduled to vest between January 1, 2019 and March 30, 2019. 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The reporting person will provide upon request by the Commission staff, the Issuer or a security holder of the Issuer full information regarding the number of shares sold at each separate price."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares are held by M&S Hilzinger Family, LP, a limited partnership of which the reporting person and his wife, through their ownership in M&S Hilzinger Family GP, LLC, are the sole general partners and of which the reporting person and his wife are the sole limited partners."}],"balance_after":36175,"source":{"system":"sec-edgar","filing":"0000757011-18-000110","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/757011/000075701118000110/primary_doc.xml","form_type":"4"}},{"id":3859608,"issuer":{"id":12609,"kind":"organization","name":"USG 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