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Financial Instruments and Fair Value Measures - Financial Instruments (Details) SFr in Millions, $ in Millions, € in Billions, kr in Billions	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2024 EUR (€)	Mar. 31, 2024 SEK (kr)	Mar. 31, 2024 CAD ($)	Mar. 31, 2024 CHF (SFr)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 SEK (kr)	Dec. 31, 2023 CAD ($)	Dec. 31, 2023 CHF (SFr)	Dec. 31, 2019 USD ($)
Derivative instruments, notional amount and fair value
Amount excluded from the assessment of effectiveness for cash flow hedges	$ 0	$ 0
Amount excluded from the assessment of effectiveness for fair value hedges	0	$ 0
Fair value - Derivatives in asset position	99,000,000						$ 66,000,000
Fair value - Derivatives in liability position	428,000,000						496,000,000
Designated as hedging instrument \| Net investment hedges \| Senior notes
Derivative instruments, notional amount and fair value
Principal amount of unsecured senior notes \| €			€ 5.4					€ 5.4
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Cash flow hedges
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments	$ 1,100,000,000						1,800,000,000
Duration of forward exchange contracts	18 months
Approximate length of time over which accumulated gains and losses will be recognized in Cost of products sold	6 months
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Cash flow hedges \| Prepaid expenses and other
Derivative instruments, notional amount and fair value
Fair value - Derivatives in asset position	$ 30,000,000						12,000,000
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Cash flow hedges \| Accounts payable and accrued liabilities
Derivative instruments, notional amount and fair value
Fair value - Derivatives in liability position	4,000,000						32,000,000
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Net investment hedges
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments			€ 4.9	kr 1.4	$ 750	SFr 50		€ 4.9	kr 1.4	$ 750	SFr 50
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Net investment hedges \| Prepaid expenses and other
Derivative instruments, notional amount and fair value
Fair value - Derivatives in asset position	53,000,000						13,000,000
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Net investment hedges \| Accounts payable and accrued liabilities
Derivative instruments, notional amount and fair value
Fair value - Derivatives in liability position	38,000,000						66,000,000
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Net investment hedges \| Other assets
Derivative instruments, notional amount and fair value
Fair value - Derivatives in asset position	6,000,000						0
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Net investment hedges \| Other long-term liabilities
Derivative instruments, notional amount and fair value
Fair value - Derivatives in liability position	3,000,000						69,000,000
Designated as hedging instrument \| Treasury rate lock agreements \| Cash flow hedges
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments												$ 10,000,000,000
Designated as hedging instrument \| Interest rate swap contracts \| Fair value hedges
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments	5,000,000,000						5,000,000,000
Designated as hedging instrument \| Interest rate swap contracts \| Fair value hedges \| Prepaid expenses and other
Derivative instruments, notional amount and fair value
Fair value - Derivatives in asset position	0						0
Designated as hedging instrument \| Interest rate swap contracts \| Fair value hedges \| Accounts payable and accrued liabilities
Derivative instruments, notional amount and fair value
Fair value - Derivatives in liability position	1,000,000						0
Designated as hedging instrument \| Interest rate swap contracts \| Fair value hedges \| Other assets
Derivative instruments, notional amount and fair value
Fair value - Derivatives in asset position	0						0
Designated as hedging instrument \| Interest rate swap contracts \| Fair value hedges \| Other long-term liabilities
Derivative instruments, notional amount and fair value
Fair value - Derivatives in liability position	357,000,000						293,000,000
Not designated as hedging instrument \| Foreign currency forward exchange contracts
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments	6,200,000,000						7,900,000,000
Not designated as hedging instrument \| Foreign currency forward exchange contracts \| Prepaid expenses and other
Derivative instruments, notional amount and fair value
Fair value - Derivatives in asset position	10,000,000						41,000,000
Not designated as hedging instrument \| Foreign currency forward exchange contracts \| Accounts payable and accrued liabilities
Derivative instruments, notional amount and fair value
Fair value - Derivatives in liability position	$ 25,000,000						$ 36,000,000