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Percentage of fair value of reporting unit in excess of carrying amount.

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Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Asset Impairment Charges	$ 0.0	$ 1.9	$ 0.0	$ 71.8
Goodwill	$ 9,817.3		$ 9,817.3		$ 9,590.6
Goodwill, Impaired, Change in Estimate, Period			5 years
Fair Value Inputs, Long-term Revenue Growth Rate, Terminal Year			2.00%
Measurement Input, Discount Rate \| Increased Discount Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Test, Measurement Input, Increase	0.035		0.035
Measurement Input, Discount Rate \| Goodwill
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Test, Measurement Input	0.110		0.110
Measurement Input, Estimated Tax Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Test, Measurement Input	0.255		0.255
Measurement Input, Control Premium
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Test, Measurement Input	0.150		0.150
Measurement Input, Long-term Revenue Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Test, Measurement Input	0.075		0.075
Measurement Input, Long-term Revenue Growth Rate \| Reduction in Terminal Value Growth Rate
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Test, Measurement Input, Reduction	0.035		0.035
Europe Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 4,746.1		$ 4,746.1		$ 4,548.6
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	11.00%		11.00%
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	$ 1,300.0		$ 1,300.0
Minimum \| Measurement Input, EBITDA Multiple
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Test, Measurement Input	8.0		8.0
Maximum \| Measurement Input, EBITDA Multiple
Finite-Lived Intangible Assets [Line Items]
Goodwill Impairment Test, Measurement Input	9.5		9.5
Rest of World Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 1,650.0		$ 1,650.0
Europe Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill	4,430.0		4,430.0
North America Brands
Finite-Lived Intangible Assets [Line Items]
Goodwill	650.0		650.0
North America Generics
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 2,600.0		$ 2,600.0