Segments and Related Information - Foreign Operations (Details) - USD ($) $ in Thousands				12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment and Related Information [Line Items]
Revenue				$ 9,778,038	$ 7,951,781	$ 6,320,975
United States
Segment and Related Information [Line Items]
Revenue				9,600,000	7,800,000	6,200,000
Property and equipment, net	$ 1,733,100	$ 1,411,600	$ 959,500	1,733,100	1,411,600	959,500
Intangible assets and goodwill, net	3,000,000	2,100,000	1,400,000	3,000,000	2,100,000	1,400,000
Foreign Operations
Segment and Related Information [Line Items]
Revenue				149,900	165,200	133,100
Property and equipment, net	21,000	24,500	22,800	21,000	24,500	22,800
Intangible assets and goodwill, net	$ 35,500	$ 43,800	$ 50,500	$ 35,500	$ 43,800	$ 50,500
Accounts Receivable, Net, Less Contract Liabilities | Geographic Concentration Risk | Foreign Operations
Segment and Related Information [Line Items]
Concentration risk, percentage of total	1.00%	2.00%	5.00%
Revenue Benchmark | Customer Concentration Risk | Government Transactions
Segment and Related Information [Line Items]
Concentration risk, percentage of total				7.00%	5.00%	2.00%