License and Other Agreements - Revenue Participation Rights with RPI Finance Trust (Details) - RPI Funding Agreement	1 Months Ended
	Jun. 30, 2018 USD ($)
Liability For Sale of Future Royalties [Line Items]
Proceeds from royalty agreement	$ 100,000,000
Percentage of revenue participation rights available for repurchase (percent)	100.00%
Price of revenue participation rights available for repurchase	$ 155,000,000
Revenue Participation Right, tranche one
Liability For Sale of Future Royalties [Line Items]
Participation rate for revenue participation right (percent)	2.10%
Revenue Participation Right, tranche one | Maximum
Liability For Sale of Future Royalties [Line Items]
Annual global net sales threshold for revenue participation right	$ 1,500,000,000
Revenue Participation Right, tranche two
Liability For Sale of Future Royalties [Line Items]
Participation rate for revenue participation right (percent)	1.50%
Revenue Participation Right, tranche two | Minimum
Liability For Sale of Future Royalties [Line Items]
Annual global net sales threshold for revenue participation right	$ 1,500,000,000