Receivable from Mutual Funds, Insurance Companies, and Other - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Receivables from clients	$ 695	$ 563	$ 470
Fees from mutual fund and insurance companies	$ 335	$ 285	$ 291