Lease Obligations - Lessee - Lease Assets and Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease ROU assets	$ 526	$ 511
Finance lease ROU assets	146	126
Total right-of-use assets	672	637
Operating lease liabilities	606	601
Finance lease liabilities	161	134
Total lease liabilities	767	735
Operating lease right of use asset, accumulated amortization	328	292
Finance lease right of use asset, accumulated amortization	$ 54	$ 77
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