Financial Instruments and Risk Management Financial Instruments and Risk Management (Rollforward of Contingent Consideration) (Details) - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accretion expense		$ 15.8
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	[1]	(78.1)
Business Combination Contingent Consideration Liability Payments		(36.3)
Contingent consideration		466.0	$ 564.6
Other current liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accretion expense	[2]	0.0
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	[1],[2]	(62.9)
Business Combination Contingent Consideration Liability Payments	[2]	(36.1)
Contingent consideration	[2]	157.9	256.9
Other long-term obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accretion expense	[3]	15.8
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings	[1],[3]	(15.2)
Business Combination Contingent Consideration Liability Payments	[3]	(0.2)
Contingent consideration	[3]	$ 308.1	$ 307.7

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

[2] Included in other current liabilities on the Condensed Consolidated Balance Sheets.

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