Supplemental Financial Information - Post-employment Obligations and Other Long-term Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Post-employment Obligations and Other Long-term Liabilities [Line Items]
Defined benefit pension plans and post-employment medical and dental plans for significant plans	$ 1,880	$ 1,964
Deferred income taxes	512	568
Operating lease liabilities	896	949
All other	3,443	3,466
Total	6,731	6,947
Net unrecognized tax benefits	3,568	3,323	$ 2,036
Transition tax obligation	432
Post-employment obligations and other long-term liabilities
Post-employment Obligations and Other Long-term Liabilities [Line Items]
Net unrecognized tax benefits	860	650
Transition tax obligation	$ 210	$ 430