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Contingencies (Details) $ in Millions	1 Months Ended	6 Months Ended
	Mar. 31, 2014 case	Jun. 30, 2022 USD ($) case claim	Dec. 31, 2021 USD ($)	Aug. 31, 2020 claim
Legal Defense Costs
Loss Contingencies [Line Items]
Legal defense costs reserve | $		$ 235	$ 230
Zetia antitrust litigation
Loss Contingencies [Line Items]
Loss contingency, pending claims | claim				35
Zetia antitrust litigation | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, new claims filed | claim		23
Fosamax
Loss Contingencies [Line Items]
Loss contingency, pending claims		3,450
Fosamax | Femur Fracture Litigation | Federal
Loss Contingencies [Line Items]
Loss contingency, claims dismissed	650
Loss contingency, claims on appeal	515
Januvia | Other State Court
Loss Contingencies [Line Items]
Loss contingency, pending claims | claim		6
Januvia | Cases Company Agreed To Toll Statute Of Limitations
Loss Contingencies [Line Items]
Loss contingency, pending claims | claim		50
Bridion | Patents
Loss Contingencies [Line Items]
Loss contingency, claims settled		4
Bridion | Patents | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, pending claims		2
Januvia and Janumet | Patents
Loss Contingencies [Line Items]
Loss contingency, claims settled		22

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