Lease Obligations - Lessee - Lease Assets and Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease right-of-use assets	$ 508	$ 427
Finance lease right-of-use assets	150	145
Total right-of-use assets	658	572
Operating lease liabilities	599	520
Finance lease liabilities	156	149
Total lease liabilities	755	669
Operating lease right of use asset, accumulated amortization	255	198
Finance lease right of use asset, accumulated amortization	$ 66	$ 47
Operating lease right-of-use assets [Extensible List]	Other assets	Other assets
Finance lease, right-of-use assets [Extensible List]	Bank premises and equipment	Bank premises and equipment
Operating lease liabilities [Extensible List]	Accrued Liabilities [Member]	Accrued Liabilities [Member]
Finance lease liabilities [Extensible List]	Long-term debt	Long-term debt