Fair Value (Level 3 Fair Value Measurements Using Significant Other Unobservable Inputs for Acquisition-Related Contingent Consideration (Recurring)) (Details) - Significant Other Unobservable Inputs (Level 3) [Member] - Fair Value, Measurements, Recurring [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Regulatory & Commercialization-based milestones	$ 185,157
Minimum [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, measurement input	5.56%
Minimum [Member] | Measurement Input, Probabilty Of Payment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, measurement input	77.40%
Maximum [Member] | Measurement Input, Probabilty Of Payment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, measurement input	85.00%
Weighted Average [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, measurement input	5.56%
Weighted Average [Member] | Measurement Input, Probabilty Of Payment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, measurement input	81.75%