Leases (Supplemental Balance Sheet Information Related to Leases) (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating lease, right-of-use asset		$ 448	$ 424
Finance lease, right-of-use asset	[1]	47	49
Total leased assets		495	473
Operating lease, liability, current		153	147
Finance lease, liability, current		11	10
Operating lease, liability, noncurrent		312	283
Finance lease, liability, noncurrent		44	49
Total lease liabilities		520	489
Operating lease, liability, current		153	147
Finance lease, liability, current		11	10
Finance lease, right-of-use asset	[1]	47	49
Finance lease, liability, noncurrent		$ 44	$ 49
Finance Leased Asset, Type [Extensible Enumeration]		Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]		Long-Term Debt	Long-Term Debt
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]		Other Accrued Liabilities, Current	Other Accrued Liabilities, Current
Debt, Current [Abstract]		Debt, Current	Debt, Current

[1] Finance leases are recorded net of accumulated amortization of $67 million and $59 million at December 31, 2023 and 2022, respectively.