Cash Flow Information - Schedule of Supplemental Cash Flow Information (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest		$ 255	$ 282	$ 141
Cash paid for taxes		12	33	17
Non-cash activities:
Issuance of general partnership interests through partnership loans in current year		270	319	276
Repayment of partnership loans through distributions from partnership capital in current year		193	157	191
Declared distributions for retired partnership capital in current year but unpaid at year end	[1]	$ 182	$ 140	$ 219

[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.