Schedule I - Condensed Statements of Cash Flow (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income		$ 0	$ 0	$ 0
Adjustments to reconcile net income to net cash provided by operating activities:
Income before allocations to partners		1,404	1,605	1,285
Changes in assets and liabilities:
Other assets		(54)	(195)	(67)
Accounts payable and accrued expenses		7	227	32
Net cash provided by operating activities		2,353	2,395	25
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of general partnership loans		(71)	(45)	0
Issuance of partnership interests		63	66	50
Redemption of partnership interests		(336)	(260)	(214)
Distributions from partnership capital		(1,173)	(1,181)	(864)
Net cash used in financing activities		(1,375)	(1,330)	(1,028)
Net increase (decrease) in cash, cash equivalents and restricted cash		676	831	(1,132)
CASH AND CASH EQUIVALENTS:
Beginning of year		7,706	6,875	8,007
End of year		8,382	7,706	6,875
NON-CASH ACTIVITIES:
Issuance of general partnership interests through partnership loans in current year		276	222	163
Repayment of partnership loans through distributions from partnership capital in current year		262	242
Declared distributions for retired partnership capital in current year but unpaid at year end	[1]	219	254	145
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income		0	0	0
Adjustments to reconcile net income to net cash provided by operating activities:
Income before allocations to partners		1,404	1,605	1,285
Changes in assets and liabilities:
Investment in subsidiaries		58	(71)	(1)
Investment securities		(105)	(276)	(247)
Other assets		(27)	(14)	(6)
Accounts payable and accrued expenses		(5)	1	0
Net cash provided by operating activities		1,325	1,273	1,031
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of general partnership loans		71	17	0
Issuance of partnership interests		63	66	50
Redemption of partnership interests		(336)	(260)	(214)
Distributions from partnership capital		(1,173)	(1,153)	(864)
Net cash used in financing activities		(1,375)	(1,330)	(1,028)
Net increase (decrease) in cash, cash equivalents and restricted cash		(50)	(57)	3
CASH AND CASH EQUIVALENTS:
Beginning of year		266	323	320
End of year		216	266	323
NON-CASH ACTIVITIES:
Issuance of general partnership interests through partnership loans in current year		276	222	163
Repayment of partnership loans through distributions from partnership capital in current year		191	225	182
Declaration of distributions from subsidiary in current year but received after year end		667	434	474
Declared distributions for retired partnership capital in current year but unpaid at year end		$ 219	$ 254	$ 145

[1] Declared distributions for retired Partnership capital are included in the accounts payable, accrued expenses and other line of the Consolidated Statements of Financial Condition.