Goodwill and Other Intangibles - Schedule of Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Details) - Core Deposits - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Gross balance	$ 271	$ 128
Accumulated amortization	(131)	(109)
Balance, net of accumulated amortization	$ 140	$ 19	$ 30