Leases Maturities of lease liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Lessee, Operating Lease, Liability, Payment, Due [Abstract]
2025	$ 90
2026	74
2027	49
2028	41
2029	39
Later years	131
Total lease payments	424
Less amounts representing interest	(51)
Total lease obligations	373
Finance Lease, Liability, Payment, Due [Abstract]
2025	30
2026	27
2027	23
2028	20
2029	19
Later years	71
Total lease payments	190
Less amounts representing interest	(45)
Total lease obligations	$ 145	$ 148