Variable Interest Entities and Securitization Activities - Assets and Liabilities by Type of Activity (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Variable Interest Entity
VIE Assets	$ 1,160,029	$ 1,188,140
VIE Liabilities	1,057,940	1,081,542
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity
VIE Assets	3,237	2,912
VIE Liabilities	1,596	1,028
Variable Interest Entity, Primary Beneficiary | MABS
Variable Interest Entity
VIE Assets	1,006	1,177
VIE Liabilities	471	409
Variable Interest Entity, Primary Beneficiary | Investment vehicles
Variable Interest Entity
VIE Assets	885	717
VIE Liabilities	508	294
Variable Interest Entity, Primary Beneficiary | Operating entities
Variable Interest Entity
VIE Assets	502	508
VIE Liabilities	33	39
Variable Interest Entity, Primary Beneficiary | Other
Variable Interest Entity
VIE Assets	844	510
VIE Liabilities	$ 584	$ 286