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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, 2026 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2026 EUR (€)	Mar. 31, 2026 SEK (kr)	Mar. 31, 2026 CAD ($)	Mar. 31, 2026 CHF (SFr)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 EUR (€)	Dec. 31, 2025 SEK (kr)	Dec. 31, 2025 CAD ($)	Dec. 31, 2025 CHF (SFr)
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	155,000,000						$ 91,000,000
Fair value - Derivatives in liability position	338,000,000						540,000,000
Designated as hedging instrument \| Net investment hedges \| Senior notes
Derivative instruments, notional amount and fair value
Principal amount of unsecured senior notes \| €			€ 3.1					€ 3.1
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Cash flow hedges
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments	$ 2,400,000,000						2,500,000,000
Duration of forward exchange contracts	24 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	$ 46,000,000						35,000,000
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	25,000,000						51,000,000
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Cash flow hedges \| Other assets
Derivative instruments, notional amount and fair value
Fair value - Derivatives in asset position	10,000,000						1,000,000
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Cash flow hedges \| Other long-term liabilities
Derivative instruments, notional amount and fair value
Fair value - Derivatives in liability position	0						0
Designated as hedging instrument \| Foreign currency forward exchange contracts \| Net investment hedges
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments			€ 6.7	kr 1.4	$ 800	SFr 80		€ 6.5	kr 1.4	$ 500	SFr 80
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	21,000,000						0
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	115,000,000						220,000,000
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	5,000,000						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	120,000,000						228,000,000
Designated as hedging instrument \| Interest rate swap contracts \| Cash flow hedges
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments	750,000,000
Designated as hedging instrument \| Interest rate swap contracts \| Cash flow hedges \| Other assets
Derivative instruments, notional amount and fair value
Fair value - Derivatives in asset position	5,000,000						0
Designated as hedging instrument \| Interest rate swap contracts \| Cash flow hedges \| Other long-term liabilities
Derivative instruments, notional amount and fair value
Fair value - Derivatives in liability position	0						0
Designated as hedging instrument \| Interest rate swap contracts \| Fair value hedges
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments	3,300,000,000						1,800,000,000
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	14,000,000						21,000,000
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	22,000,000						30,000,000
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	40,000,000						0
Not designated as hedging instrument \| Foreign currency forward exchange contracts
Derivative instruments, notional amount and fair value
Notional amount of derivative instruments	9,300,000,000						9,200,000,000
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	46,000,000						25,000,000
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	$ 24,000,000						$ 20,000,000