Fair Value Measurements - Summary of Carrying Values, Estimated Fair Values and Fair Value Measurement Levels of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2022		Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Certain impaired loans	$ 28	[1]	$ 32	[2]
Other assets	41	[3]	32	[4]
Total	69		64
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Certain impaired loans	28	[1]	32	[2]
Other assets	41	[3]	32	[4]
Total	$ 69		$ 64

[1] Represents the fair value of certain loans individually assessed for impairment, based on the value of the collateral.

[2] Represents the fair value of impaired loans, based on the value of the collateral.

[3] Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets and equity securities without readily determinable fair values. These equity securities are classified as Level 3 due to the infrequency of the observable prices and/or the restrictions on the shares.

[4] Represents the fair value of repossessed assets, based on the appraised value of the collateral subsequent to its initial classification as repossessed assets.