Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Apr. 01, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
In-process research and development		$ 688.8		$ 688.8			$ 813.2
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	[1]			(48.9)
Contingent consideration		418.8		418.8			453.7
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		15.5	$ 0.0	87.5	$ 13.0
Goodwill		385.0		$ 385.0			385.0
Goodwill, Impaired, Change in Estimate Description				5
Fair Value Inputs, Earnings before Interest, Taxes, Depreciation, and Amortization Multiple				0.15
Fair Value Inputs, Long-term Revenue Growth Rate				3.50%
Fair Value Inputs, Long-term Revenue Growth Rate, Terminal Year				2.00%
Respiratory delivery platform [Member]
Finite-Lived Intangible Assets [Line Items]
In-process research and development		347.2		$ 347.2
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings		19.3		49.3
Contingent consideration		326.6		326.6
North America Generics [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill						$ 2,890.0
North America Specialty [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill						660.0
Europe Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill		0.0		0.0		4,970.0	0.0
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount						$ 800.0
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount						6.00%
Rest of World Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 0.0		$ 0.0		$ 1,800.0	$ 0.0
Minimum
Finite-Lived Intangible Assets [Line Items]
Fair Value Inputs, Earnings before Interest, Taxes, Depreciation, and Amortization Multiple				9.0
Maximum
Finite-Lived Intangible Assets [Line Items]
Goodwill, Impaired, Change in Estimate Description				0.24
Fair Value Inputs, Earnings before Interest, Taxes, Depreciation, and Amortization Multiple				10.5
Goodwill [Member] | Maximum
Finite-Lived Intangible Assets [Line Items]
Rate used to discount net cash inflows to present value				9.00%
Reduction in Terminal Value Growth Rate [Domain]
Finite-Lived Intangible Assets [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate, Terminal Year				2.00%
Increased Discount Rate [Domain]
Finite-Lived Intangible Assets [Line Items]
Rate used to discount net cash inflows to present value				1.50%

[1] Included in litigation settlements and other contingencies, net in the Condensed Consolidated Statements of Operations.