Supplemental information to the Consolidated Statement of Cash Flows (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Supplemental Cash Flow Information [Abstract]
Change in assets of consolidated investment management funds	$ 215	$ 76
Change in liabilities of consolidated investment management funds	3	4
Change in nonredeemable noncontrolling interests of consolidated investment management funds	10	65
Securities purchased not settled	1,730	1,113
Securities matured not settled	0	10
Premises and equipment/capitalized software funded by finance lease obligations	0	14
Premises and equipment/operating lease obligations	66	1,272
Investment redemptions not settled	$ 0	$ 0