Noncontrolling Interest - Schedule of Noncontrolling Interest (Details)	Jun. 30, 2018	Jun. 30, 2017
Evercore LP [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	11.00%	13.00%
Evercore Wealth Management [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	44.00%	43.00%
Private Capital Advisory L.P. (PCA) [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)	24.00%	26.00%