Total Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 106,598
OCI during the period	$ (209)	$ 232	(2,044)	$ (621)
Ending balance	102,662	108,162	102,662	108,162
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(4,902)	(2,754)	(3,102)	(1,962)
OCI during the period	(119)	231	(1,919)	(561)
Ending balance	(5,021)	(2,523)	(5,021)	(2,523)
CTA
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,050)	(936)	(1,002)	(795)
OCI during the period	(176)	41	(224)	(100)
Ending balance	(1,226)	(895)	(1,226)	(895)
AFS Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(2,150)	1,011	245	1,787
OCI during the period	(1,076)	(7)	(3,471)	(783)
Ending balance	(3,226)	1,004	(3,226)	1,004
Pension and Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(546)	(493)	(551)	(498)
OCI during the period	3	12	8	17
Ending balance	(543)	(481)	(543)	(481)
DVA
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,156)	(2,336)	(1,794)	(2,456)
OCI during the period	1,130	185	1,768	305
Ending balance	$ (26)	$ (2,151)	$ (26)	$ (2,151)