Total Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance			$ 106,598
OCI during the period	$ (754)	$ (182)	(2,798)	$ (803)
Ending balance	102,089	107,119	102,089	107,119
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(5,021)	(2,523)	(3,102)	(1,962)
OCI during the period	(737)	(178)	(2,656)	(739)
Ending balance	(5,758)	(2,701)	(5,758)	(2,701)
CTA
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,226)	(895)	(1,002)	(795)
OCI during the period	(207)	(65)	(431)	(165)
Ending balance	(1,433)	(960)	(1,433)	(960)
AFS Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(3,226)	1,004	245	1,787
OCI during the period	(1,307)	(256)	(4,778)	(1,039)
Ending balance	(4,533)	748	(4,533)	748
Pension and Other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(543)	(481)	(551)	(498)
OCI during the period	5	5	13	22
Ending balance	(538)	(476)	(538)	(476)
DVA
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(26)	(2,151)	(1,794)	(2,456)
OCI during the period	772	138	2,540	443
Ending balance	$ 746	$ (2,013)	$ 746	$ (2,013)