Accelerated Depreciation For Leasehold Improvements

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- Definition

Headcount Reductions

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- Definition

Special Charges incurred related to the impairment of intangible assets, Special Charges incurred in connection with exiting facilities and Special Charges related to acquisitions, including the exiting of facilities for office space, introducing fees as well as other professional fees

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Acquisition and Transition Costs and Special Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2020
Business Acquisition [Line Items]
Acquisition and Transition Costs		$ 1,013	$ 21	$ 1,673
Special Charges		10,141	5,012	25,437
Impairment of Goodwill		2,921
Severance Costs		8,145	9,420	6,655
Special Charges [Member]
Business Acquisition [Line Items]
Impairment of Goodwill		2,921
Accelerated Depreciation For Leasehold Improvements		4,370
Severance Costs		2,850	2,024	3,930
Investment Management [Member]
Business Acquisition [Line Items]
Acquisition and Transition Costs		308	21	1,118
Special Charges		2,939	0	11,037
Investment Management [Member] \| Institutional Asset Management [Member] \| Special Charges [Member]
Business Acquisition [Line Items]
Impairment of Goodwill		2,088		7,107
Investment Banking [Member]
Business Acquisition [Line Items]
Acquisition and Transition Costs		705	0	555
Special Charges		$ 7,202	$ 5,012	14,400
Evercore Trust Company [Member]
Business Acquisition [Line Items]
Special Charges				3,930
G5 [Member] \| Investment Banking [Member] \| Special Charges [Member]
Business Acquisition [Line Items]
Equity Method Investment, Other than Temporary Impairment				$ 14,400
Forecast [Member]
Business Acquisition [Line Items]
Headcount Reductions (as a percent)					6.00%
Forecast [Member] \| Special Charges [Member]
Business Acquisition [Line Items]
Severance Costs	$ 38,000