Fair Value Measurement (Quantitative Information About Recurring and Non-recurring Level 3 Fair Value Measurements) (Details) - Recurring Basis $ in Millions	3 Months Ended
	Mar. 31, 2016 USD ($)
Contingent Consideration Payable | Minimum
Fair Value Inputs
Assumed market participant discount rate	1.20%
Cumulative probability of milestones being achieved (in percent)	4.00%
Periods in which milestones are expected to be achieved	2016
Forecast quarterly royalties payable on net sales of relevant products	$ 2.2
Contingent Consideration Payable | Maximum
Fair Value Inputs
Assumed market participant discount rate	12.40%
Cumulative probability of milestones being achieved (in percent)	90.00%
Periods in which milestones are expected to be achieved	2030
Forecast quarterly royalties payable on net sales of relevant products	$ 6.6
Contingent Consideration Payable | Income approach (probability weighted discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Liabilities	882.5
Contingent Consideration Receivable | Income approach (probability weighted discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets	$ 15.3
Fair Value Inputs
Assumed market participant discount rate	8.40%
Contingent Consideration Receivable | Income approach (probability weighted discounted cash flow) | Minimum
Fair Value Inputs
Probability weightings applied to different sales scenarios (in percent)	10.00%
Future forecast consideration receivable based on contractual terms with purchaser	$ 0.0
Contingent Consideration Receivable | Income approach (probability weighted discounted cash flow) | Maximum
Fair Value Inputs
Probability weightings applied to different sales scenarios (in percent)	90.00%
Future forecast consideration receivable based on contractual terms with purchaser	$ 26.0