Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
ASSETS MEASURED ON A NONRECURRING BASIS
Collateral-dependent loans	$ 60	$ 17
Accrued income and other assets	72	14
Total assets on a recurring basis at fair value	132	31
Level 1
ASSETS MEASURED ON A NONRECURRING BASIS
Collateral-dependent loans	0	0
Accrued income and other assets	0	0
Total assets on a recurring basis at fair value	0	0
Level 2
ASSETS MEASURED ON A NONRECURRING BASIS
Collateral-dependent loans	0	0
Accrued income and other assets	0	0
Total assets on a recurring basis at fair value	0	0
Level 3
ASSETS MEASURED ON A NONRECURRING BASIS
Collateral-dependent loans	60	17
Accrued income and other assets	72	14
Total assets on a recurring basis at fair value	$ 132	$ 31