Schedule I - Condensed Statements of Income (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net revenue:
Revenues	$ 12,373	$ 10,165	$ 9,526
Interest expense	94	102	157
Net revenue	12,279	10,063	9,369
OPERATING EXPENSES
Compensation and benefits	8,720	7,186	6,538
Other operating expenses	526	361	576
Total operating expenses	10,674	8,778	8,277
Income before allocations to partners	1,605	1,285	1,092
Allocations to partners	(1,605)	(1,285)	(1,092)
NET INCOME	0	0	0
Parent Company [Member]
Net revenue:
Revenues	4,001	3,138	2,504
Interest expense	92	93	94
Net revenue	3,909	3,045	2,410
OPERATING EXPENSES
Compensation and benefits	2,303	1,759	1,317
Other operating expenses	1	1	1
Total operating expenses	2,304	1,760	1,318
Income before allocations to partners	1,605	1,285	1,092
Allocations to partners	(1,605)	(1,285)	(1,092)
NET INCOME	0	0	0
Parent Company [Member] | Subsidiary Earnings [Member]
Net revenue:
Revenues	1,593	1,271	1,064
Parent Company [Member] | Management Fee Income [Member]
Net revenue:
Revenues	2,395	1,852	1,411
Parent Company [Member] | Other [Member]
Net revenue:
Revenues	$ 13	$ 15	$ 29