Fair Value Measurement (Quantitative Information About Recurring and Non-recurring Level 3 Fair Value Measurements) (Details) (Recurring Basis, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Contingent Consideration Payable | Minimum
Fair Value Inputs
Assumed market participant discount rate	0.60%
Cumulative probability of milestones being achieved	4.00%
Periods in which milestones are expected to be achieved	2015
Forecast quarterly royalties payable on net sales of relevant products	$ 0.2
Contingent Consideration Payable | Maximum
Fair Value Inputs
Assumed market participant discount rate	11.80%
Cumulative probability of milestones being achieved	95.00%
Periods in which milestones are expected to be achieved	2030
Forecast quarterly royalties payable on net sales of relevant products	7.6
Contingent Consideration Payable | Income approach (probability weighted discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Liabilities	724.0
Contingent Consideration Receivable | Income approach (probability weighted discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets	15.0
Contingent Consideration Receivable | Income approach (probability weighted discounted cash flow) | Minimum
Fair Value Inputs
Probability weightings applied to different sales scenarios	10.00%
Future forecast consideration receivable based on contractual terms with purchaser	25
Assumed market participant discount rate	8.30%
Contingent Consideration Receivable | Income approach (probability weighted discounted cash flow) | Maximum
Fair Value Inputs
Probability weightings applied to different sales scenarios	70.00%
Future forecast consideration receivable based on contractual terms with purchaser	$ 33
Assumed market participant discount rate	11.50%