Commitments - Extended Warranty Liability (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Movement in deferred income
Amortization of deferred revenue	$ (4,300)
Deferred income (current)	14,051		$ 13,451
Deferred income (noncurrent)	3,488		$ 3,533
Extended Warranty
Movement in deferred income
Beginning Balance	184	$ 272
Revenue deferred for new extended warranty contracts	5	9
Amortization of deferred revenue	(32)	(37)
Other	(3)	1
Ending Balance	154	244
Deferred income (current)	94	129
Deferred income (noncurrent)	$ 60	$ 116