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Share-Based and Other Deferred Compensation - Summary of Activity Related to Share-Based Awards (Details)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
shares
Acquisition Related [Member] | Evercore ISI [Member] | Class J LP Units [Member]  
Number of Shares  
Unvested Balance at January 1, 2020 | shares 223
Granted | shares 0
Modified | shares 0
Forfeited | shares 0
Vested | shares (223)
Unvested Balance at December 31, 2020 | shares 0
Grant Date Weighted Average Fair Value  
Unvested Balance at January 1, 2020 | $ $ 4,311
Granted | $ 0
Modified | $ 0
Forfeited | $ 0
Vested | $ (4,311)
Unvested Balance at December 31, 2020 | $ $ 0
2006 and 2016 Stock Incentive Plans [Member]  
Number of Shares  
Unvested Balance at January 1, 2020 | shares 6,414
Granted | shares 1,946
Modified | shares 0
Forfeited | shares (121)
Vested | shares (2,715)
Unvested Balance at December 31, 2020 | shares 5,524
Grant Date Weighted Average Fair Value  
Unvested Balance at January 1, 2020 | $ $ 527,456
Granted | $ 157,508
Modified | $ 0
Forfeited | $ (10,458)
Vested | $ (209,388)
Unvested Balance at December 31, 2020 | $ $ 465,118