Leases Supplemental balance sheet information (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease right-of-use assets	$ 422	$ 413
Finance lease, right-of-use asset	154	176
Lease, Right-of-Use Asset	576	589
Operating leases (Note 16)	89	83
Finance Lease, Liability, Current	24	25
Operating lease liabilities	325	364
Finance Lease, Liability, Noncurrent	124	147
Lease Liability	$ 562	$ 619
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 - 2023: $4,080; 2022: $3,687)	Property, plant and equipment (net of accumulated depreciation - 2023: $4,080; 2022: $3,687)
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