Goodwill and Intangible Assets (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
In-process research and development		$ 767.1		$ 813.2
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	[1]	2.9
Contingent consideration		461.4		453.7
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)		30.0	$ 0.0
Goodwill		385.0		385.0
Respiratory delivery platform [Member]
Finite-Lived Intangible Assets [Line Items]
In-process research and development		347.2
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings		2.7
Contingent consideration		368.4
Europe Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill		0.0		0.0
Rest of World Segment
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 0.0		$ 0.0

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