Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Nov. 07, 2022	Apr. 01, 2021
Finite-Lived Intangible Assets [Line Items]
In-process research and development		$ 319.6	$ 40.2		$ 319.6
Contingent consideration		371.1	375.0		371.1
Business Combination Contingent Consideration Liability Payments					(33.6)
Intangible asset disposal & impairment charges		0.0		$ 0.0	32.0	$ 0.0
Goodwill		10,278.1	10,425.8		10,278.1
Goodwill, Transfers					(65.9)
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | Women's Healthcare Business
Finite-Lived Intangible Assets [Line Items]
Goodwill, Transfers					65.9
Oyster Point Pharma Acquisition
Finite-Lived Intangible Assets [Line Items]
Contingent consideration		60.0			60.0
Goodwill		5.9			5.9
Famy Life Sciences Acquisition
Finite-Lived Intangible Assets [Line Items]
Goodwill							$ 89.3
Product Rights And Licenses | Oyster Point Pharma Acquisition
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets		$ 334.0			334.0
In Process Research and Development | Famy Life Sciences Acquisition
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets							$ 290.0
Licensing Agreements
Finite-Lived Intangible Assets [Line Items]
Write down of intangible assets			172.9		$ 32.0
Europe Segment
Finite-Lived Intangible Assets [Line Items]
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount								$ 535.0
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount		3.90%			3.90%
Good will, After Amortization Expense, Before Reclassification		$ 4,470.0			$ 4,470.0
Europe Segment | Measurement Input, Long-term Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.024)			(0.024)
Europe Segment | Valuation Technique, Discounted Cash Flow
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input, Term	10 years
Europe Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Terminal Year Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.020)			(0.020)
Europe Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Estimated Tax Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.149)			(0.149)
Europe Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Reduction in Terminal Year Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.010)			(0.010)
Europe Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Increase in Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.005)			(0.005)
Europe Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.110)			(0.110)
North America Segment
Finite-Lived Intangible Assets [Line Items]
Good will, After Amortization Expense, Before Reclassification		$ 3,150.0			$ 3,150.0
Emerging Markets Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill		1,307.8	1,334.7		1,307.8
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount		$ 513.0			$ 513.0
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount		7.70%			7.70%
Good will, After Amortization Expense, Before Reclassification		$ 1,340.0			$ 1,340.0
Goodwill, Transfers					$ (16.2)
Emerging Markets Segment | Measurement Input, Long-term Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.018)			(0.018)
Emerging Markets Segment | Valuation Technique, Discounted Cash Flow
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input, Term	10 years
Emerging Markets Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Terminal Year Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.020)			(0.020)
Emerging Markets Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Estimated Tax Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.174)			(0.174)
Emerging Markets Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Reduction in Terminal Year Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.025)			(0.025)
Emerging Markets Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Increase in Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.010)			(0.010)
Emerging Markets Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.115)			(0.115)
JANZ
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 652.2	689.0		$ 652.2
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount		$ 145.0			$ 145.0
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount		5.50%			5.50%
Good will, After Amortization Expense, Before Reclassification		$ 680.0			$ 680.0
Goodwill, Transfers					$ 0.0
JANZ | Measurement Input, Long-term Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.020)			(0.020)
JANZ | Valuation Technique, Discounted Cash Flow
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input, Term	10 years
JANZ | Valuation Technique, Discounted Cash Flow | Measurement Input, Estimated Tax Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.306)			(0.306)
JANZ | Valuation Technique, Discounted Cash Flow | Measurement Input, Reduction in Terminal Year Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.015)			(0.015)
Goodwill Impairment, Measurement Input, Reduction Percentage		0.50%			0.50%
JANZ | Valuation Technique, Discounted Cash Flow | Measurement Input, Increase in Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input, Reduction Percentage		0.50%			0.50%
JANZ | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input		(0.070)			(0.070)
Greater China
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 939.7	940.6		$ 939.7
Good will, After Amortization Expense, Before Reclassification		$ 940.0			940.0
Goodwill, Transfers					$ 0.0
Minimum | Europe Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input Increase		1.00%			1.00%
Maximum | Europe Segment | Valuation Technique, Discounted Cash Flow | Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Measurement Input Increase		4.50%			4.50%
Other Current Liabilities [Member]
Finite-Lived Intangible Assets [Line Items]
Contingent consideration		$ 59.4	$ 64.4		$ 59.4
Business Combination Contingent Consideration Liability Payments					(33.6)
Reconciling items:
Finite-Lived Intangible Assets [Line Items]
Intangible asset disposal & impairment charges					$ 32.0	$ 0.0
Europe Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Decrease In Fair Value During Period, Percentage					10.00%
North America Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Decrease In Fair Value During Period, Percentage					10.00%
Greater China
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Decrease In Fair Value During Period, Percentage					10.00%
JANZ
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Decrease In Fair Value During Period, Percentage					15.00%
Emerging Markets Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment, Decrease In Fair Value During Period, Percentage					15.00%