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] $ in Thousands	6 Months Ended
	Jun. 30, 2020 USD ($)
Fair Value, Measurements, Recurring [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Regulatory & Commercialization-based milestones	$ 180,111
Fair Value, Measurements, Recurring [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, Year Projection [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected fiscal year of payment	October 2020
Minimum [Member] | Fair Value, Measurements, Recurring [Member] | Measurement Input, Probabilty Of Payment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, measurement input	40.00%
Maximum [Member] | Fair Value, Measurements, Recurring [Member] | Measurement Input, Year Projection [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Projected fiscal year of payment	September 2025
Maximum [Member] | Fair Value, Measurements, Recurring [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] | Fair Value, Measurements, Recurring [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, measurement input	5.56%
Weighted Average [Member] | Fair Value, Measurements, Recurring [Member] | Measurement Input, Probabilty Of Payment [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Contingent consideration, measurement input	81.34%