Supplemental information to the Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Supplemental Cash Flow Information [Abstract]
Transfers from loans to other assets for other real estate owned	$ 2	$ 1
Change in assets of consolidated investment management funds	266	74
Change in liabilities of consolidated investment management funds	2	4
Change in nonredeemable noncontrolling interests of consolidated investment management funds	189	201
Securities purchased not settled	323	866
Securities sold not settled	64	100
Available-for-sale securities transferred to held-to-maturity	906	5,945
Premises and equipment/operating lease obligations	$ 67	$ 56