Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues
Total revenues	$ 568,507	$ 497,857
Product revenues, net
Revenues
Total revenues	486,727	396,249
JAKAFI
Revenues
Total revenues	459,479	375,611
ICLUSIG
Revenues
Total revenues	27,248	20,638
Product royalty revenues
Revenues
Total revenues	81,780	61,608
JAKAVI Royalty Revenues
Revenues
Total revenues	56,333	45,571
OLUMIANT Royalty Revenues
Revenues
Total revenues	$ 25,447	16,037
Milestone and contract revenues
Revenues
Total revenues		$ 40,000