Debt - Schedule of Liability Related to Sale of Future Royalties (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2019	Jun. 30, 2018
Movement in Deferred Revenue [Roll Forward]
Liability related to sale of future royalties - current	$ 0		$ 3,455
Rpi Finance Trust | Royalty Arrangement
Movement in Deferred Revenue [Roll Forward]
Fair value, liability related to sale of future royalties, beginning balance	202,007	$ 182,216	221,295
Non-cash interest expenses	19,288	19,791	39,929	$ 19,800
Fair value, liability related to sale of future royalties, ending balance	$ 221,295	$ 202,007	261,224	$ 202,007
Liability related to sale of future royalties - current			$ 3,455