Leases - ROU Assets and Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating Lease - ROU Asset	$ 1,122	$ 1,116
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Deferred income taxes and other assets	Deferred income taxes and other assets
Operating Lease, Liability [Abstract]
Current	$ 245	$ 230
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other accrued liabilities	Other accrued liabilities
Non-current	$ 949	$ 943
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Post-employment Obligations, Deferred Income Taxes and Other Long-term Liabilities	Post-employment Obligations, Deferred Income Taxes and Other Long-term Liabilities
Present value of lease liabilities	$ 1,194	$ 1,173