Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Millions		12 Months Ended
	Jun. 03, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Foreign currency exchange transaction gain (loss)		$ 17.7	$ (26.5)	$ (15.6)
Advertising costs		$ 216.0	$ 56.1	$ 56.4
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets		2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets		25 years
Weighted Average
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets		20 years
Baxalta
Finite-Lived Intangible Assets [Line Items]
Preliminary fair value of purchase consideration	$ 32,397.7