Accumulated Other Comprehensive Loss, Excluding Noncontrolling Interests (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		$ 95,916	$ 77,462	$ 63,473
Other comprehensive income/(loss)		331	(2,422)	(589)
Ending balance		89,288	95,916	77,462
Accumulated Other Comprehensive Income/(Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		(8,304)	(5,897)	(5,310)
Other comprehensive income/(loss)	[1]	343	(2,407)	(587)
Ending balance		(7,961)	(8,304)	(5,897)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	[2]	(8,360)	(6,172)	(5,450)
Other comprehensive income/(loss)	[1],[2]	497	(2,188)	(722)
Ending balance	[2]	(7,863)	(8,360)	(6,172)
Derivative Financial Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		(412)	119	(428)
Other comprehensive income/(loss)	[1]	195	(531)	547
Ending balance		(217)	(412)	119
Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		220	(220)	116
Other comprehensive income/(loss)	[1]	(229)	440	(336)
Ending balance		(9)	220	(220)
Prior Service (Costs)/Credits and Other [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance		248	377	452
Other comprehensive income/(loss)	[1]	(120)	(129)	(75)
Ending balance		$ 128	$ 248	$ 377

[1] Foreign currency translation adjustments include net losses in 2023, 2022 and 2021 related to the impact of our net investment hedging program and our equity-method investment in Haleon/the Consumer Healthcare JV (see Note 2C).

[2] Amounts do not include foreign currency translation adjustments attributable to noncontrolling interests.