Performance Fees Allocated to Funds (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Performance Fees, December 31, 2012	$ 2,780,217
Performance Fees Allocated as a Result of Changes in Fund Fair Values	2,981,757
Foreign Exchange Gain	7,733
Fund Distributions	(1,094,915)
Performance Fees, December 31, 2013	4,674,792
Private Equity
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Performance Fees, December 31, 2012	780,474
Performance Fees Allocated as a Result of Changes in Fund Fair Values	614,554
Fund Distributions	(423,168)
Performance Fees, December 31, 2013	971,860
Real Estate
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Performance Fees, December 31, 2012	1,633,279
Performance Fees Allocated as a Result of Changes in Fund Fair Values	2,084,222
Foreign Exchange Gain	7,733
Fund Distributions	(456,628)
Performance Fees, December 31, 2013	3,268,606
Hedge Fund Solutions
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Performance Fees, December 31, 2012	6,214
Performance Fees Allocated as a Result of Changes in Fund Fair Values	68,609
Fund Distributions	(65,355)
Performance Fees, December 31, 2013	9,468
Credit
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Performance Fees, December 31, 2012	360,250
Performance Fees Allocated as a Result of Changes in Fund Fair Values	214,372
Fund Distributions	(149,764)
Performance Fees, December 31, 2013	$ 424,858