Derivatives and Hedging - Summary of Realized and Unrealized Gains (Losses) Recognized in Condensed Consolidated Statements of Income on Derivative Instruments (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss) from derivative instruments	$ 10	$ (103)	$ (128)
Seed Investment [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss) from derivative instruments	112	$ 36
Deferred Cash Compensation Plans [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total gain (loss) from derivative instruments	$ 24