Fair Value Measurement (Quantitative Information About Recurring and Non-recurring Level 3 Fair Value Measurements) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fair Value Inputs
Impairment of intangible assets	$ 197.9	$ 16.0	$ 42.7
Recurring Basis | Contingent Consideration Payable | Minimum
Fair Value Inputs
Assumed market participant discount rate	5.90%
Cumulative probability of milestones being achieved	19.00%
Periods in which milestones are expected to be achieved	2013
Forecast quarterly royalties payable on net sales of relevant products	2.9
Recurring Basis | Contingent Consideration Payable | Maximum
Fair Value Inputs
Assumed market participant discount rate	8.70%
Cumulative probability of milestones being achieved	45.00%
Periods in which milestones are expected to be achieved	2028
Forecast quarterly royalties payable on net sales of relevant products	3.4
Recurring Basis | Contingent Consideration Payable | Income approach (probability weighted discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Liabilities	136.4
Recurring Basis | Contingent Consideration Receivable
Fair Value Inputs
Assumed market participant discount rate	5.40%
Recurring Basis | Contingent Consideration Receivable | Minimum
Fair Value Inputs
Probability weightings applied to different sales scenarios	10.00%
Future forecast royalties receivable at relevant contractual royalty rates	19
Recurring Basis | Contingent Consideration Receivable | Maximum
Fair Value Inputs
Probability weightings applied to different sales scenarios	50.00%
Future forecast royalties receivable at relevant contractual royalty rates	181
Recurring Basis | Contingent Consideration Receivable | Income approach (probability weighted discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets	38.3
Nonrecurring Basis | RESOLOR Intangibles
Fair Value Inputs
Decline in forecast peak sales following results of an evaluation of alternative selling strategies	41.00%
Assumed market participant effective tax rate	15.00%
Impairment of intangible assets	197.9
Nonrecurring Basis | RESOLOR Intangibles | Minimum
Fair Value Inputs
Assumed market participant discount rate	7.70%
Nonrecurring Basis | RESOLOR Intangibles | Maximum
Fair Value Inputs
Assumed market participant discount rate	8.70%
Nonrecurring Basis | RESOLOR Intangibles | Income approach (discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets	$ 167.5