Supplemental Financial Information - Post-employment Obligations and Other Long-term Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Post-employment Obligations and Other Long-term Liabilities [Line Items]
Defined benefit pension plans and post-employment medical and dental plans for significant plans	$ 1,784	$ 2,738
Deferred income taxes	991	1,392
Operating lease liabilities	943	956
All other	3,804	3,685
Total	7,522	8,771
Net unrecognized tax benefits	2,036	1,908	$ 1,210
Post-employment obligations and other long-term liabilities
Post-employment Obligations and Other Long-term Liabilities [Line Items]
Net unrecognized tax benefits	$ 850	$ 680