Fair Value Measurement (Quantitative Information About Recurring and Non-recurring Level 3 Fair Value Measurements) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Fair Value Inputs
Impairment of IPR&D intangible assets	$ 166.0	$ 0
SHP602 IPR&D
Fair Value Inputs
Impairment of IPR&D intangible assets	166.0
Recurring Basis | Contingent Consideration Payable | Minimum
Fair Value Inputs
Assumed market participant discount rate	2.90%
Cumulative probability of milestones being achieved	11.00%
Periods in which milestones are expected to be achieved	2014
Forecast quarterly royalties payable on net sales of relevant products	2.1
Recurring Basis | Contingent Consideration Payable | Maximum
Fair Value Inputs
Assumed market participant discount rate	15.00%
Cumulative probability of milestones being achieved	57.00%
Periods in which milestones are expected to be achieved	2025
Forecast quarterly royalties payable on net sales of relevant products	7.6
Recurring Basis | Contingent Consideration Payable | Income approach (probability weighted discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Liabilities	350.3
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	15.0
Assumed market participant discount rate	7.00%
Recurring Basis | Contingent Consideration Receivable | Maximum
Fair Value Inputs
Probability weightings applied to different sales scenarios	70.00%
Future forecast royalties receivable at relevant contractual royalty rates	148.0
Assumed market participant discount rate	11.50%
Recurring Basis | Contingent Consideration Receivable | Income approach (probability weighted discounted cash flow)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets	59.4
Nonrecurring Basis
Fair Value Inputs
Assumed market participant discount rate	11.30%
Expected commercial launch date	2021
Nonrecurring Basis | SHP602 IPR&D
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Liabilities	$ 0
Nonrecurring Basis | Minimum
Fair Value Inputs
Probability of regulatory approval being obtained	11.00%
Nonrecurring Basis | Income approach (discounted cash flow) | Maximum
Fair Value Inputs
Probability of regulatory approval being obtained	15.00%