Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 285,537	$ 223,619
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	208,679	203,537
Provisions for cardholder losses	34,433	27,587
Share-based compensation	20,524	20,055
Provisions for bad debt expenses and billing adjustments	5,170	4,906
Charges for transaction processing provisions	3,177	4,053
Amortization of debt issuance costs	2,362	2,163
Dividends received from equity investments	892	943
(Gain) Loss on foreign currency	(107)	824
Amortization of bond discount	482	449
Loss on disposal of equipment, net	32	428
Deferred income tax expense (benefit)	18,657	(18,191)
Equity in income of equity investments, net of tax	(22,929)	(22,422)
Changes in operating assets and liabilities, net of effects of acquisitions:
Accounts receivable	(17,489)	(12,090)
Contract assets and contract liabilities	(8,797)	5,224
Contract cost assets	2,989
Prepaid expenses, other current assets and other long-term assets	5,111	845
Accounts payable	(3,368)	13,177
Accrued salaries and employee benefits	(38,784)	(27,160)
Other current liabilities and other long-term liabilities	(25,978)	(26,969)
Net cash provided by operating activities	470,593	400,978
Cash flows from investing activities:
Purchases of property and equipment	(48,608)	(26,739)
Additions to contract acquisition costs		(14,655)
Additions to internally developed computer software	(19,934)	(13,581)
Additions to licensed computer software from vendors	(19,216)	(10,568)
Cash used in acquisitions, net of cash acquired	(1,051,629)
Other investing activities	(4,119)	(759)
Net cash used in investing activities	(1,143,506)	(66,302)
Cash flows from financing activities:
Principal payments on long-term borrowings, capital lease obligations and license agreements	(2,626,534)	(234,093)
Purchase of noncontrolling interest	(126,000)	(70,000)
Dividends paid on common stock	(47,190)	(36,734)
Subsidiary dividends paid to noncontrolling shareholders	(3,778)	(3,885)
Repurchase of common stock under plans and tax withholding	(82)	(24)
Debt issuance costs	(15,979)
Proceeds from borrowings of long-term debt	3,477,000
Proceeds from exercise of stock options	29,289	8,987
Net cash provided by (used in) financing activities	686,726	(335,749)
Cash, cash equivalents and restricted cash:
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(4,143)	3,494
Net increase in cash, cash equivalents and restricted cash	9,670	2,421
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance	451,370	425,810
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance	461,040	428,231
Supplemental cash flow information:
Interest paid	71,778	57,405
Income taxes paid, net	$ 21,475	$ 121,620