Other Assets (Components of Other Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Other receivables from brokers, dealers, and clearing organizations	$ 2,475	$ 1,748
Receivables — interest, dividends, and other	1,615	1,180
Other securities owned at fair value	1,584	687
Other investments	1,526	1,019
Operating lease ROU assets	842	937
Customer contract receivables	637	579
Securities borrowed	582	873
Capitalized contract costs	344	303
Other	713	457
Total other assets	10,318	7,783
FRB stock	436	191
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
FHLB stock	$ 29	$ 29

Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments.

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