Performance Fees Allocated to Funds (Detail) $ in Thousands	3 Months Ended
Performance Fees Allocated to Funds (Detail) $ in Thousands	Mar. 31, 2026 USD ($)
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Beginning Balance	$ 32,212,111
Ending Balance	32,747,619
Performance Fees
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Beginning Balance	12,980,356
Performance Allocations as a Result of Changes in Fund Fair Values	1,465,321
Foreign Exchange Loss	(1,400)
Fund Distributions	(1,441,322)
Ending Balance	13,002,955
Real Estate Segment
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Beginning Balance	1,762,496
Performance Allocations as a Result of Changes in Fund Fair Values	298,528
Foreign Exchange Loss	(1,400)
Fund Distributions	(467,073)
Ending Balance	1,592,551
Private Equity Segment
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Beginning Balance	10,389,351
Performance Allocations as a Result of Changes in Fund Fair Values	1,090,560
Fund Distributions	(693,371)
Ending Balance	10,786,540
Credit & Insurance Segment
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Beginning Balance	640,587
Performance Allocations as a Result of Changes in Fund Fair Values	29,396
Fund Distributions	(165,837)
Ending Balance	504,146
Multi-Asset Investing \| Performance Fees
Schedule of Performance Fees and Allocations to the General Partner [Line Items]
Beginning Balance	187,922
Performance Allocations as a Result of Changes in Fund Fair Values	46,837
Fund Distributions	(115,041)
Ending Balance	$ 119,718