Premises, Equipment, and Leases - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Fixed asset and lease asset impairments	$ 0	$ 0
Fixed asset impairments			$ 34,000,000
Leased asset impairments			3,000,000
Net gain on sale of properties, before applicable income taxes	0	0	6,000,000
Direct financing and sale-type lease, interest income	50,000,000	34,000,000	26,000,000
Profit (loss) direct financing or sales-type leases	$ 0	$ 0	$ 0
Minimum
Property, Plant and Equipment [Line Items]
Direct financing lease term	2 years
Sales-type lease term	2 years
Maximum
Property, Plant and Equipment [Line Items]
Direct financing lease term	23 years
Sales-type lease term	23 years