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The additional ownership percentage acquired.

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Number of partnership common units subject to vesting conditions that were issued to the sellers.

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Discount on unvested awards.

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Share based compensation arrangement by share based payment award equity instruments other than options forfeiture rate.

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Share based compensation arrangement by share based payment award equity instruments other than options revised forfeiture rate.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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 difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of share instruments newly issued under a share-based compensation plan.

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Equity-Based Compensation - Additional Information (Details) - USD ($)		1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 01, 2013	Jun. 30, 2015	Dec. 31, 2012	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Jan. 01, 2015	May. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of the Partnership's common units and Carlyle Holdings partnership units available for grant under the Equity Incentive Plan (in shares)									31,895,630	30,450,000
AlpInvest
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional ownership percentage acquired	40.00%
Common units issued to AlpInvest employees that are subject to vesting conditions (in shares)	914,087
Unvested Partnership Common Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting of unvested units (in years)						5 years
Allocated share based compensation expense				$ 1,800,000	$ 1,900,000	$ 6,900,000	$ 6,400,000
Unrecognized equity-based compensation expense				3,900,000		$ 3,900,000
Weighted-average term for unrecognized compensation expense to be recognized (in years)						7 months
Unvested Partnership Common Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate (as a percent)						5.00%
Unvested Partnership Common Units \| AlpInvest
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional ownership percentage acquired	40.00%
Common units issued to AlpInvest employees that are subject to vesting conditions (in shares)	914,087
Amount of unvested common units forfeited by an individual (in shares)		11,674
Unvested Carlyle Holdings Partnership Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting of unvested units (in years)						6 years
Forfeiture rate (as a percent)						2.50%
Tax benefits related to equity-based compensation expense						$ 0
Unrecognized equity-based compensation expense				481,500,000		$ 481,500,000
Weighted-average term for unrecognized compensation expense to be recognized (in years)						2 years 7 months
Unvested Carlyle Holdings Partnership Units \| Carlyle Holdings
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share based compensation expense				41,800,000	43,300,000	$ 147,900,000	148,800,000
Unvested Carlyle Holdings Partnership Units \| ECM Capital, L.P.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting of unvested units (in years)			5 years
Number of partnership units issued with time vesting (in shares)			996,572
Number of partnership units issued at closing with performance-based vesting (in shares)			597,944
Deferred Restricted Common Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share based compensation expense				43,100,000	33,900,000	134,500,000	105,300,000
Tax benefits related to equity-based compensation expense				4,000,000	$ 4,200,000	12,700,000	13,100,000
Unrecognized equity-based compensation expense				339,500,000		$ 339,500,000
Weighted-average term for unrecognized compensation expense to be recognized (in years)						2 years 7 months
Additional compensation expense recognized due to the revision of forfeiture rates						$ 7,500,000
Deferred Restricted Common Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate (as a percent)						2.00%
Forfeiture rate (as a percent)						2.00%		5.00%
Deferred Restricted Common Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting of unvested units (in years)						6 years
Forfeiture rate (as a percent)						10.00%
Forfeiture rate (as a percent)						10.00%		15.00%
Unit discount (as a percent)						25.00%
Phantom Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period of vesting of unvested units (in years)						3 years
Forfeiture rate (as a percent)						10.00%
Allocated share based compensation expense						$ 1,700,000	$ 2,400,000
Unrecognized equity-based compensation expense				$ 100,000		$ 100,000
Weighted-average term for unrecognized compensation expense to be recognized (in years)						1 year 3 months
Forfeiture rate (as a percent)						10.00%		15.00%