Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 4,321,363	$ 3,672,218	$ 4,251,296	$ 3,657,958
Other comprehensive loss	15,790	21,688	(11,356)	(12,163)
Ending balance	4,476,657	3,904,295	4,476,657	3,904,295
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(47,347)	(78,995)	(20,201)	(45,144)
Ending balance	(31,557)	$ (57,307)	(31,557)	$ (57,307)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			(33,295)
Other comprehensive loss			(7,284)
Ending balance	(40,579)		(40,579)
Net Unrealized Gains (Losses) on Investments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance			13,094
Other comprehensive loss			(4,072)
Ending balance	$ 9,022		$ 9,022