Revenue - Opening and Closing Balances (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Accounts receivable, net	$ 726,382	$ 676,738
Increase in accounts receivables	49,644
Contract assets, current	33,614	13,534
Increase in contract asset, current	20,080
Contract assets, non-current	53,137	54,050
Increase in contract asset, non-current	(913)
Deferred revenue, current	104,568	101,258
Increase in deferred revenue, current	3,310
Deferred revenue, non-current	68,992	$ 71,242
Increase in deferred revenue, non-current	$ (2,250)