Leases - Supplemental balance sheet information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Operating leases:
Operating lease right-of-use assets (included in Other assets)	$ 201	$ 220
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Current operating lease liabilities (included in Other current liabilities)	$ 41	$ 44
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current	Other Liabilities, Current
Noncurrent operating lease liabilities (included in Other long-term liabilities)	$ 169	$ 184
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Total operating lease liabilities	$ 210	$ 228
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Current, Other Liabilities, Noncurrent	Other Liabilities, Current, Other Liabilities, Noncurrent
Finance leases:
Property, plant and equipment	$ 261	$ 238
Accumulated amortization	(60)	(64)
Net property, plant and equipment	201	174
Current finance lease liabilities (included in Long-term debt due within one year)	$ 32	$ 23
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt, Current Maturities	Long-Term Debt, Current Maturities
Noncurrent finance lease liabilities (included in Long-term debt)	$ 163	$ 151
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt, Excluding Current Maturities	Long-Term Debt, Excluding Current Maturities
Total finance lease liabilities	$ 195	$ 174
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt, Current Maturities, Long-Term Debt, Excluding Current Maturities	Long-Term Debt, Current Maturities, Long-Term Debt, Excluding Current Maturities
Weighted-average remaining lease term (in years):
Operating leases weighted-average remaining lease term (in years)	6 years 6 months	6 years 7 months 6 days
Finance leases weighted-average remaining lease term (in years)	6 years 2 months 12 days	6 years 9 months 18 days
Weighted-average discount rate:
Operating leases (as a percent)	6.72%	6.56%
Finance leases (as a percent)	5.75%	5.88%