Acquisitions and Other Transactions (Jai Pharma Limited) (Narrative) (Details) $ in Millions			12 Months Ended
		Nov. 20, 2015 USD ($) shareholder	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Acquisitions			$ 0.0	$ 22.8
Goodwill			10,205.7	$ 9,231.9	$ 5,380.1
Maximum
Business Acquisition [Line Items]
Rate used to discount net cash inflows to present values				9.80%
Minimum
Business Acquisition [Line Items]
Rate used to discount net cash inflows to present values				0.90%
Jai Pharma Limited
Business Acquisition [Line Items]
Acquisition purchase price		$ 750.0
Net assets acquired		$ 711.1	711.1
Minimum number of former shareholders providing services | shareholder		1
Number of shareholders | shareholder		2
Post-acquisition consulting services period		2 years
Working capital and other adjustments excluded		$ 7.0
Identified intangible assets			437.0
Goodwill			323.9
Amount of goodwill expected to be tax deductible			150.0
Acquisition related costs				$ 8.5
Jai Pharma Limited | Product rights and licenses
Business Acquisition [Line Items]
Acquired intangible assets, weighted average useful life, in years		9 years
Jai Pharma Limited | Maximum
Business Acquisition [Line Items]
Purchase consideration, contingent consideration, maximum		$ 50.0
Rate used to discount net cash inflows to present values		11.00%
Jai Pharma Limited | Minimum
Business Acquisition [Line Items]
Rate used to discount net cash inflows to present values		10.00%
Other Noncurrent Liabilities
Business Acquisition [Line Items]
Acquisitions	[1]		$ 0.0	$ 1.2
Other Noncurrent Liabilities | Jai Pharma Limited
Business Acquisition [Line Items]
Acquisitions		$ 18.0

[1] Included in other long-term obligations on the Consolidated Balance Sheets.