Noncontrolling Interest - Schedule of Noncontrolling Interest (Details)	Mar. 31, 2019	Mar. 31, 2018
Evercore LP [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	11.00%	11.00%
Evercore Wealth Management [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	40.00%	41.00%
Private Capital Advisory L.P. (PCA) [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	10.00%	10.00%