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The performance factor for these performance stock units was determined on February 22, 2017."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Not Applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Not Applicable."}],"balance_after":176265,"derivative":{"underlying":"Common Stock","underlying_shares":55313},"source":{"system":"sec-edgar","filing":"0001127602-17-008209","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760217008209/form4.xml","form_type":"4"}},{"id":4426715,"issuer":{"id":1501,"kind":"organization","name":"MARSH & MCLENNAN COMPANIES, INC.","symbol":"MRSH"},"owners":[{"id":36961,"kind":"person","name":"Glaser Daniel S","position":1,"cik":"0001420864","reported_name":"Glaser Daniel S","relationship":{"director":true,"officer":true,"officer_title":"President and CEO, MMC"}}],"security":"Restricted Stock Units","published_at":"2017-02-24T21:08:35.000Z","date":"2017-02-22","kind":"grant","acquired":true,"shares":35864,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The security converts to Marsh & McLennan Companies common stock on a 1-for-1 basis."},{"field":"kind","element":"transactionCoding","label":"F3","text":"These restricted stock units vest in three equal annual installments on February 28th of 2018, 2019 and 2020."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Not Applicable."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Not Applicable."}],"balance_after":120952,"derivative":{"underlying":"Common Stock","underlying_shares":35864},"source":{"system":"sec-edgar","filing":"0001127602-17-008209","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760217008209/form4.xml","form_type":"4"}},{"id":4426714,"issuer":{"id":1501,"kind":"organization","name":"MARSH & MCLENNAN COMPANIES, INC.","symbol":"MRSH"},"owners":[{"id":36961,"kind":"person","name":"Glaser Daniel S","position":1,"cik":"0001420864","reported_name":"Glaser Daniel S","relationship":{"director":true,"officer":true,"officer_title":"President and CEO, MMC"}}],"security":"Stock Options (Right to Buy)","published_at":"2017-02-24T21:08:35.000Z","date":"2017-02-22","kind":"grant","acquired":true,"shares":349767,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"These options were granted on February 22, 2017 and vest in four equal annual installments on February 22nd of 2018, 2019, 2020 and 2021."}],"balance_after":349767,"derivative":{"exercise_price":73.195,"expiration_date":"2027-02-21","underlying":"Common Stock","underlying_shares":349767},"source":{"system":"sec-edgar","filing":"0001127602-17-008209","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760217008209/form4.xml","form_type":"4"}},{"id":4456393,"issuer":{"id":1501,"kind":"organization","name":"MARSH & MCLENNAN COMPANIES, INC.","symbol":"MRSH"},"owners":[{"id":36961,"kind":"person","name":"Glaser Daniel S","position":1,"cik":"0001420864","reported_name":"Glaser Daniel S","relationship":{"director":true,"officer":true,"officer_title":"President and CEO, MMC"}}],"security":"Common Stock","published_at":"2017-02-13T21:34:22.000Z","date":"2016-12-06","kind":"gift","acquired":false,"shares":1525,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":279611.9999,"source":{"system":"sec-edgar","filing":"0001127602-17-005440","document":"form5.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/62709/000112760217005440/form5.xml","form_type":"5"}}]}