Contingencies and Environmental Liabilities (Details) $ in Millions			12 Months Ended
	Dec. 19, 2022	Jun. 30, 2022 claim	Dec. 31, 2022 USD ($) case Plaintiff	Dec. 31, 2021 USD ($)	Aug. 31, 2020 claim
Loss Contingencies [Line Items]
Accrued liabilities for environmental matters | $			$ 39	$ 40
Environmental Loss Contingency Statement Of Financial Position Extensible Enumeration Not Disclosed Flag			liabilities
Term for paying off environmental liabilities			15 years
Aggregate possible expenditure on environmental matters in excess of amounts accrued | $			$ 35
Legal Defense Costs
Loss Contingencies [Line Items]
Legal defense costs reserve | $			$ 230	$ 230
Commercial Litigation
Loss Contingencies [Line Items]
Loss contingency, pending claims			2
Loss contingency, number of plaintiffs | Plaintiff			2
Patent litigation
Loss Contingencies [Line Items]
Loss contingency, claims settled (in cases)			22
Zetia antitrust litigation
Loss Contingencies [Line Items]
Loss contingency, pending claims | claim					35
Loss contingency, damages sought | $			$ 12,700
Zetia antitrust litigation | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, new claims filed | claim		23
Gardasil/Gardasil 9 | United States
Loss Contingencies [Line Items]
Loss contingency, pending claims			70
Gardasil/Gardasil 9 | Outside of the United States
Loss Contingencies [Line Items]
Loss contingency, pending claims			15
Gardasil/Gardasil 9 | COLOMBIA
Loss Contingencies [Line Items]
Loss contingency, pending claims			1
Bridion | Patents
Loss Contingencies [Line Items]
Loss contingency, claims settled (in cases)			5
Bridion | Patents | Pending Litigation
Loss Contingencies [Line Items]
Loss contingency, pending claims			2
Loss contingency, trial period	1 day