Lease Obligations - Lessee - Other Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating leases, weighted average remaining lease term	11 years 6 months 25 days	11 years 25 days
Finance leases, weighted average remaining lease term	12 years 7 months 28 days	15 years 2 months 15 days
Operating leases, weighted average discount rate	4.08%	3.72%
Finance leases, weighted average discount rate	3.80%	3.02%
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 95	$ 91	$ 90
Operating cash flows from finance leases	6	5	5
Financing cash flows from finance leases	18	16	23
Gains on sale-leaseback transactions	$ 0	$ 2	$ 4