Goodwill and Intangible Assets - Goodwill (Details) - USD ($)		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020
Changes in the carrying amount of goodwill
Balance at the beginning of the period		$ 33,124,000,000		$ 15,604,000,000
Additions		177,000,000	[1]	17,008,000,000	[2]
Goodwill measurement period adjustments	[3]	(564,000,000)
Foreign currency translation adjustments and other		(358,000,000)		512,000,000
Balance at the end of the period		32,379,000,000		$ 33,124,000,000
Accumulated goodwill impairment losses
Accumulated goodwill impairment losses		$ 0

[1] Goodwill additions related to the acquisition of Soliton in the fourth quarter of 2021 (see Note 5).

[2] Goodwill additions related to the acquisition of Allergan in the second quarter of 2020 and the acquisition of Luminera in the fourth quarter of 2020 (see Note 5).

[3] Measurement period adjustments recorded in 2021 related to the acquisition of Allergan (see Note 5).