Lease Obligations - Lessee - Lease Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Lease Cost [Line Items]
Total finance lease costs	$ 24	$ 22	$ 14
Total operating lease costs	110	110	137
Total lease costs	134	132	151
Impairment losses and termination charges	2	3	8
Net occupancy and equipment expense
Lease Cost [Line Items]
Amortization of ROU assets	19	18	11
Interest on long-term debt
Lease Cost [Line Items]
Interest on lease liabilities	5	4	3
Net occupancy expense
Lease Cost [Line Items]
Operating lease cost	84	80	110
Short-term lease cost	1	2	1
Variable lease cost	28	31	29
Sublease income	(3)	(3)	(3)
Impairment losses and termination charges	$ 2	$ 3	$ 8