Unaudited Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities
Net income	$ 729,008	$ 614,493
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	67,066	55,605
Stock-based compensation	100,828	52,085
Provision for credit losses on accounts and other receivables	89,976	19,419
Amortization of deferred financing costs and discounts	5,949	4,903
Amortization of intangible assets and premium on receivables	165,423	153,579
Loss on extinguishment of debt	1,934	6,230
Deferred income taxes	(7,987)	10,051
Other non-cash operating loss	601	72
Changes in operating assets and liabilities (net of acquisitions/dispositions):
Accounts and other receivables	(950,237)	(1,020,900)
Prepaid expenses and other current assets	(300,600)	190,543
Other assets	(105,013)	28,370
Accounts payable, accrued expenses and customer deposits	641,659	485,091
Net cash provided by operating activities	438,607	599,541
Investing activities
Acquisitions, net of cash acquired	(160,117)	(545,052)
Purchases of property and equipment	(107,631)	(74,455)
Other	0	(2,281)
Net cash used in investing activities	(267,748)	(621,788)
Financing activities
Proceeds from issuance of common stock	22,109	48,159
Repurchase of common stock	(1,295,644)	(822,277)
Borrowings on securitization facility, net	364,000	398,000
Deferred financing costs	(10,282)	(21,508)
Proceeds from notes payable	3,000,000	1,150,000
Principal payments on notes payable	(2,800,500)	(462,438)
Borrowings from revolver	4,338,000	1,140,000
Payments on revolver	(3,658,000)	(798,851)
Borrowings (payments) on swing line of credit, net	194	(51,049)
Other	0	(811)
Net cash (used in) provided by financing activities	(40,123)	579,225
Effect of foreign currency exchange rates on cash	(80,551)	(24,660)
Net increase in cash and cash equivalents and restricted cash	50,185	532,318
Cash and cash equivalents and restricted cash, beginning of period	2,250,695	1,476,619
Cash and cash equivalents and restricted cash, end of period	2,300,880	2,008,937
Supplemental cash flow information
Cash paid for interest	138,310	96,146
Cash paid for income taxes	$ 309,567	$ 147,028