Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	[1]	Jun. 30, 2018
Operating activities
Net income	$ 433,758		$ 351,789	[2]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	30,640		25,033
Stock-based compensation	30,847		33,505
Provision for losses on accounts receivable	40,142		26,495
Amortization of deferred financing costs and discounts	2,428		2,678
Amortization of intangible assets and premium on receivables	107,713		115,079
Deferred income taxes	(64,883)		(6,473)
Investment loss	15,660		0	[2]
Other non-cash operating income	(1,579)		(104)
Changes in operating assets and liabilities (net of acquisitions/dispositions):
Accounts and other receivables	(418,806)		(519,527)
Prepaid expenses and other current assets	8,154		(20,440)
Other assets	(17,286)		(15,418)
Accounts payable, accrued expenses and customer deposits	383,233		282,472
Net cash provided by operating activities	550,021		275,089
Investing activities
Acquisitions, net of cash acquired	(250,926)		(3,811)
Purchases of property and equipment	(31,975)		(34,614)
Other	0		(11,192)
Net cash used in investing activities	(282,901)		(49,617)
Financing activities
Proceeds from issuance of common stock	56,950		29,498
Repurchase of common stock	(4,024)		(380,651)
Borrowings on securitization facility, net	88,000		128,000
Deferred financing costs paid and debt discount	(352)		0
Principal payments on notes payable	(64,875)		(69,000)
Borrowings from revolver	765,709		774,019
Payments on revolver	(1,027,468)		(600,109)
Borrowings on swing line of credit, net	34,639		13,632
Other	(125)		(149)
Net cash used in financing activities	(151,546)		(104,760)
Effect of foreign currency exchange rates on cash	8,159		(66,144)
Net increase in cash and cash equivalents and restricted cash	123,733		54,568
Cash and cash equivalents and restricted cash, beginning of period	1,364,893		1,130,870
Cash and cash equivalents and restricted cash, end of period	1,488,626		1,185,438
Supplemental cash flow information
Cash paid for interest	90,559		73,303
Cash paid for income taxes	$ 100,396		$ 112,982

[1] Reflects the impact of the Company's adoption of ASU 2016-02 "Leases", on January 1, 2019, using the modified retrospective transition method. Under this method, financial results reported in periods prior to 2019 are unchanged. Refer to footnote 2.

[2] Reflects reclassifications from previously disclosed amounts to conform to current presentation.