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Financial Instruments and Risk Management (Narrative) (Details) € in Millions, ¥ in Millions, $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($)	Sep. 30, 2024 EUR (€)	Sep. 30, 2024 JPY (¥)	Jun. 30, 2024 USD ($)	Jun. 30, 2024 EUR (€)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 JPY (¥)
Derivative [Line Items]
Pre-tax net losses on cash flow hedges to be reclassified from AOCE into earnings in next twelve months \| $	$ (29.0)
Contingent consideration \| $	540.6					$ 215.1
Interest rate swaps
Derivative [Line Items]
Derivative, notional amount		€ 500.0
Respiratory delivery platform
Derivative [Line Items]
Contingent consideration \| $	149.9					177.6
Biocon Biologics
Derivative [Line Items]
Contingent consideration \| $						15.8
Idorsia Pharmaceuticals Ltd.
Derivative [Line Items]
Contingent consideration \| $	389.0			$ 345.0
Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative		3,660.8	¥ 40,000				€ 5,600.0	¥ 40,000
Long-term debt		5,100.0	40,000
2024 Euro Senior Notes \| Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative		810.8					1,000.0
Long-term debt		1,000.0
2024 Euro Senior Notes, 1.023% \| Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative		0.0					750.0
Long-term debt		750.0
2025 Euro Senior Notes \| Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative		0.0					500.0
Long-term debt		500.0
2027 Euro Senior Notes \| Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative		850.0					850.0
Long-term debt		850.0
2028 Euro Senior Notes \| Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative		750.0					750.0
Long-term debt		750.0
2032 Euro Senior Notes \| Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative		1,250.0					1,250.0
Long-term debt		1,250.0
YEN Term Loan \| Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative \| ¥			40,000					¥ 40,000
Long-term debt \| ¥			40,000
2020 Euro Senior Notes
Derivative [Line Items]
Long-term debt \| $	$ 278.5					$ 283.6
2020 Floating Rate Euro Notes \| Net Investment Hedging
Derivative [Line Items]
Notional amount of derivative		0.0					500.0
Long-term debt		€ 0.0
Interest rate swaps \| Net Investment Hedging
Derivative [Line Items]
Derivative, notional amount \| ¥			¥ 14,600
Currency Swap \| Net Investment Hedging
Derivative [Line Items]
Derivative, notional amount					€ 600.0		€ 500.0
Measurement Input, Discount Rate \| Contingent consideration \| Minimum
Derivative [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.085	0.085	0.085			0.064	0.064	0.064
Measurement Input, Discount Rate \| Contingent consideration \| Maximum
Derivative [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.180	0.180	0.180			0.080	0.080	0.080