SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - Loan Delinquencies and Liquidation Losses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Residential mortgages
Variable Interest Entity
Securitized assets	$ 29,300		$ 29,300		$ 29,200
Liquidation losses	1	$ 2	3	$ 8
Commercial and other
Variable Interest Entity
Securitized assets	28,800		28,800		26,200
Liquidation losses	0	0	0	0
Mortgage securitizations - Non-agency-sponsored
Variable Interest Entity
Securitized assets	58,100		58,100		55,400
Liquidation losses	1	$ 2	3	$ 8
Personal loan
Variable Interest Entity
Securitized assets	200		200
90 days or more past due | Residential mortgages
Variable Interest Entity
Securitized assets	500		500		400
90 days or more past due | Commercial and other
Variable Interest Entity
Securitized assets	0		0		0
90 days or more past due | Mortgage securitizations - Non-agency-sponsored
Variable Interest Entity
Securitized assets	$ 500		$ 500		$ 400