Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Operating Leases
Operating Lease ROU Assets		$ 985	$ 976
Operating Lease Liabilities due Within One Year (Note 15)		200	199
Operating Lease Liabilities (Note 15)		825	821
Total Operating Lease Liabilities		1,025	1,020
Finance Leases
Property, Plant and Equipment, at cost		288	269
Accumulated Depreciation		(80)	(69)
Property, Plant and Equipment, net		208	200
Long Term Debt and Finance Leases due Within One Year		10	8
Long Term Debt and Finance Leases		258	247
Total Finance Lease Liabilities	[1]	$ 268	$ 255
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]		Total Finance Lease Liabilities	Total Finance Lease Liabilities
Weighted Average Remaining Lease Term
Operating Leases		7 years	7 years 4 months 24 days
Finance Leases		27 years 3 months 18 days	29 years 2 months 12 days
Weighted Average Discount Rate
Operating Leases		7.24%	6.82%
Finance Leases		8.17%	8.26%

[1] Includes non-cash financing additions of $17 million and $20 million during the twelve month period ended December 31, 2023 and 2022, respectively.