Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities
Net income	$ 229,803	$ 214,835
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	28,931	25,980
Stock-based compensation	24,979	26,096
Provision for credit losses on accounts and other receivables	25,342	39,270
Amortization of deferred financing costs and discounts	2,029	1,787
Amortization of intangible assets and premium on receivables	55,829	58,252
Deferred income taxes	647	(499)
Investment gain	(167)	(190)
Other non-cash operating expense, net	292	663
Changes in operating assets and liabilities (net of acquisitions):
Accounts and other receivables	(382,889)	372,342
Prepaid expenses and other current assets	(12,587)	40,099
Derivative assets and liabilities, net	1,452	(28,223)
Other assets	(22,021)	25,141
Accounts payable, accrued expenses and customer deposits	398,544	102,112
Net cash provided by operating activities	350,184	877,665
Investing activities
Acquisitions, net of cash acquired	(56,325)	(126,691)
Purchases of property and equipment	(41,193)	(36,737)
Other	(4,826)	4,401
Net cash used in investing activities	(102,344)	(159,027)
Financing activities
Proceeds from issuance of common stock	90,838	33,399
Repurchase of common stock	(288,833)	(9,597)
Borrowings on securitization facility, net	114,000	(3,000)
Deferred financing costs	(3,176)	0
Proceeds from notes payable	325,000	0
Principal payments on notes payable	(25,531)	(23,500)
Borrowings from revolver	1,570,000	1,964,000
Payments on revolver	(1,866,000)	(2,490,000)
(Payments) borrowings on swing line of credit, net	(75,429)	310,719
Other	580	264
Net cash used in financing activities	(158,551)	(217,715)
Effect of foreign currency exchange rates on cash	(28,148)	29,298
Net increase in cash and cash equivalents and restricted cash	61,141	530,221
Cash and cash equivalents and restricted cash, beginning of period	3,141,535	2,289,180
Cash and cash equivalents and restricted cash, end of period	3,202,676	2,819,401
Supplemental cash flow information
Cash paid for interest	115,773	104,650
Cash paid for income taxes	$ 38,925	$ 35,442