Amount of realized performance fees, if the fund were liquidated at the reporting date fair value, that would be given back to the fund investors at the end of the fund's life if the fund fair value does not recover sufficiently to pass through the hurdle rate that allows for the recognition of performance fees.

No definition available.

Summary of Significant Accounting Policies - Revenue Recognition (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fund Management Fees
Period of time for which management fees will be received by partners from the initial closing date (in years)	10 years
Transaction and advisory fees	$ 47.8	$ 25.2	$ 73.3
Performance Fees
Performance fees allocation percentage to partnership (percent)	20.00%
Percentage of allocation-based performance fees for recently raised funds of our Investment Solutions carry funds (percent)	10.00%
Accrued giveback obligations	$ 160.8	252.0
Interest Income
Interest income of consolidated funds	$ 140.4	$ 873.1	$ 864.9
Minimum
Fund Management Fees
Percentage of management fees earned	1.00%
Percentage of management fees earned on unrealized investments after termination of the investment period	0.60%
Extension period for fund closing (in years)	1 year
Percentage of management fees paid by hedge funds	1.25%
Percentage of management fees for business development companies	0.25%
Percentage of management fees for CLOs on the total par amount of assets in the fund	0.15%
Period of management fees related to Collateralized Loan Obligation (in years)	5 years
Percentage of management fees from funds of funds following the expiration of the weighted average investment period	0.25%
Performance Fees
Allocation percentage for external coinvestment vehicles (percent)	10.00%
Percentage of allocation based performance fees related to more mature Investment Solutions carry funds (percent)	2.00%
Percent of preferred returns	7.00%
Minimum \| Managed Accounts and Longer-dated Carry Funds
Fund Management Fees
Percentage of management fees earned	0.20%
Minimum \| Private Equity And Real Estate Fund
Fund Management Fees
Percentage of management fees from funds of funds during the commitment fee period	0.25%
Maximum
Fund Management Fees
Percentage of management fees earned	2.00%
Percentage of management fees earned on unrealized investments after termination of the investment period	2.00%
Extension period for fund closing (in years)	2 years
Percentage of management fees paid by hedge funds	1.55%
Percentage of management fees for business development companies	1.00%
Percentage of management fees for CLOs on the total par amount of assets in the fund	1.00%
Period of management fees related to Collateralized Loan Obligation (in years)	10 years
Percentage of management fees from funds of funds following the expiration of the weighted average investment period	1.00%
Performance Fees
Allocation percentage for external coinvestment vehicles (percent)	20.00%
Percentage of allocation based performance fees related to more mature Investment Solutions carry funds (percent)	10.00%
Percent of preferred returns	9.00%
Maximum \| Managed Accounts and Longer-dated Carry Funds
Fund Management Fees
Percentage of management fees earned	1.00%
Maximum \| Private Equity And Real Estate Fund
Fund Management Fees
Percentage of management fees from funds of funds during the commitment fee period	1.00%