Segment Information - Revenue by Geographic Location (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 1,627,820	$ 1,538,271	$ 1,524,485	$ 1,515,107	$ 1,413,265	$ 949,828	$ 941,293	$ 858,435	$ 6,205,683	$ 4,162,821	$ 3,047,597
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									4,829,282	3,062,555	2,365,079
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									1,126,460	885,762	543,179
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									249,941	214,504	139,339
Total revenues outside of the United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$ 1,376,401	$ 1,100,266	$ 682,518