Leases Supplemental balance sheet information (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Leases [Abstract]
Operating lease right-of-use assets	$ 359	$ 388
Finance lease, right-of-use asset	106	119
Lease, Right-of-Use Asset	465	507
Operating leases (Note 16)	71	79
Finance Lease, Liability, Current	23	23
Operating lease liabilities	265	294
Finance Lease, Liability, Noncurrent	106	122
Lease Liability	$ 465	$ 518
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	Property, plant and equipment, net
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