Adjustments to Redeemable Noncontrolling Interest

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Decrease In Treasury Stock

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Grant Of LP Units

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LP Units Purchased or Converted into Class Common Stock Value

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Purchase Of Noncontrolling Interest (as a percent)

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Purchase Of Noncontrolling Interest (in shares)

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Amount of other increase (decrease) in additional paid in capital (APIC).

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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Represents the purchase by the parent of an additional equity interest in a subsidiary during the period, thereby effecting a change in total (consolidated) equity attributable to the parent. The purchase of the additional equity interest represented by this element increases the parent's controlling interest in the subsidiary.

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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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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Net Increase or Decrease in balance of noncontrolling interest in the subsidiary during the reporting period.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to noncontrolling interest. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to noncontrolling interests.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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This element may be used to disclose other activity associated with temporary equity that is not separately disclosed.

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Noncontrolling Interest - Additional Information (Detail) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
	May. 22, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Oct. 31, 2014	Mar. 31, 2014
Noncontrolling Interest [Line Items]
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest		$ (453)	$ (348)	$ (780)	$ (155)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest		(1,133)	(1,013)	(1,487)	(536)
Redeemable Noncontrolling Interest		$ 2,635		2,635		$ 4,014
L P Units Purchased Or Converted Into Class Common Stock Value (in shares)				26
Adjustments to Additional Paid in Capital				8,317
Net Reclassification to/from Redeemable Noncontrolling Interest				$ 0	31,268
Evercore LP [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)		15.00%		15.00%
ECB [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)		28.00%		28.00%
EWM [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)		38.00%		38.00%
Redeemable Noncontrolling Interest								$ 34,577
Noncontrolling Interest, Period Increase (Decrease)	$ 3,244
Adjustments to Additional Paid in Capital					$ (4,116)
Purchase Of Noncontrolling Interest (in shares)	3
Purchase Of Noncontrolling Interest (as a percent)	22.00%
Equity interest issued or issuable (in shares)	119
Grant Of LP Units (in units)	11
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent	$ 7,100
Noncontrolling Interest, Ownership Percentage by Parent	62.00%
Temporary Equity, Other Changes	$ 34,577
Decrease In Treasury Stock	3,856
Net Reclassification to/from Redeemable Noncontrolling Interest	$ 27,477
Atalanta Sosnoff [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)		34.00%		34.00%
Redeemable Noncontrolling Interest		$ 2,635		$ 2,635		$ 4,014
PCA [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)		35.00%		35.00%
Institutional Equities [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest (as a percent)							38.00%
Temporary Equity, Other Changes			$ 11,086
LP Unit Purchases [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Period Increase (Decrease)				$ (353)
Adjustments to Additional Paid in Capital				$ (770)