Segment Information (Revenues by geographic region) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Revenues, net	$ 810,766	$ 654,015	$ 2,273,899	$ 2,034,681
United States
Segment Reporting Information [Line Items]
Revenues, net	655,427	497,677	1,844,901	1,646,065
Europe
Segment Reporting Information [Line Items]
Revenues, net	93,869	110,448	295,460	274,763
Other
Segment Reporting Information [Line Items]
Revenues, net	$ 61,470	$ 45,890	$ 133,538	$ 113,853