Leases Supplemental balance sheet information (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease right-of-use assets	$ 388	$ 422
Finance lease, right-of-use asset	119	154
Lease, Right-of-Use Asset	507	576
Operating leases (Note 16)	79	89
Finance Lease, Liability, Current	23	24
Operating lease liabilities	294	325
Finance Lease, Liability, Noncurrent	122	124
Lease Liability	$ 518	$ 562
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Operating lease right-of-use assets	Operating lease right-of-use assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment (net of accumulated depreciation - 2024: $4,562; 2023: $4,080)	Property, plant and equipment (net of accumulated depreciation - 2024: $4,562; 2023: $4,080)
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Short-term borrowings and current installments of long-term debt - third party and affiliates	Short-term borrowings and current installments of long-term debt - third party and affiliates
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Operating lease liabilities	Operating lease liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt, net of unamortized deferred financing costs	Long-term debt, net of unamortized deferred financing costs