Segment information - Revenues Generated in United States and All International Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Revenues	$ 818,809	$ 516,105	$ 1,507,395	$ 956,005
United States
Segment Reporting Information [Line Items]
Revenues	762,344	489,945	1,414,926	904,072
International
Segment Reporting Information [Line Items]
Revenues	$ 56,465	$ 26,160	$ 92,469	$ 51,933