Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 161,607	$ 143,102
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	103,710	104,389
Amortization of operating lease right of use assets	12,654
Provisions for cardholder losses	13,269	15,545
Share-based compensation	10,714	6,295
Provisions for bad debt expenses and billing adjustments	2,948	2,839
Charges for transaction processing provisions	7	729
Amortization of debt issuance costs	1,322	1,035
Loss on foreign currency	1,138	427
Amortization of bond discount	277	233
(Gain) Loss on disposal of equipment, net	(307)	2
Deferred income tax expense	27,745	15,180
Change in value of equity investments	(174)
Equity in income of equity investments, net of tax	(11,227)	(10,608)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(40,813)	9,006
Contract assets and contract liabilities	(11,357)	498
Contract cost assets	116	2,168
Prepaid expenses, other current assets and other long-term assets	(38,936)	(7,701)
Accounts payable	918	2,289
Accrued salaries and employee benefits	(39,718)	(50,835)
Other current liabilities and other long-term liabilities	33,696	(22,700)
Net cash provided by operating activities	227,589	211,893
Cash flows from investing activities:
Purchases of property and equipment	(19,396)	(22,069)
Additions to internally developed computer software	(12,405)	(10,340)
Additions to licensed computer software from vendors	(48,628)	(13,827)
Cash used in acquisitions, net of cash acquired		(1,036,853)
Other investing activities	(2,350)	(1,550)
Net cash used in investing activities	(82,779)	(1,084,639)
Cash flows from financing activities:
Principal payments on long-term borrowings, finance lease obligations and license agreements	(157,324)	(129,010)
Dividends paid on common stock	(23,456)	(23,496)
Subsidiary dividends paid to noncontrolling shareholders		(1)
Repurchase of common stock under plans and tax withholding	(400,013)	(24)
Proceeds from borrowings of long-term debt	450,000	1,040,000
Proceeds from exercise of stock options	6,466	26,461
Net cash provided by (used in) financing activities	(124,327)	913,930
Cash, cash equivalents and restricted cash:
Effect of exchange rate changes on cash, cash equivalents and restricted cash	2,049	1,684
Net increase (decrease) in cash, cash equivalents and restricted cash	22,532	42,868
Cash, cash equivalents and restricted cash at beginning of period	474,279	451,370
Cash, cash equivalents and restricted cash at end of period	496,811	494,238
Supplemental cash flow information:
Interest paid	10,629	42,040
Income taxes (refunded) paid, net	$ (1,949)	$ 2,936