Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 57,644	$ 49,412
Adjustments to reconcile net income to net cash provided by operating activities:
Net loss on foreign currency	504	352
Equity in income of equity investments, net of tax	(2,774)	(2,270)
Dividends received from equity investments		13
Depreciation and amortization	40,873	41,068
Amortization of debt issuance costs	47	26
Share-based compensation	3,598	4,332
Excess tax benefit from share-based payment arrangements	(510)	(103)
Asset impairments		773
Provisions for (recoveries of) bad debt expenses and billing adjustments	(144)	204
Charges for transaction processing provisions	1,063	1,296
Deferred income tax expense	6,425	3,874
Gain on disposal of equipment, net	(2)	(1,497)
Changes in operating assets and liabilities:
Accounts receivable	(5,424)	2,971
Prepaid expenses, other current assets and other long-term assets	(7,044)	14,046
Accounts payable	9,825	(4,635)
Accrued salaries and employee benefits	(19,111)	(13,800)
Other current liabilities and other long-term liabilities	12,943	6,109
Net cash provided by operating activities	97,913	102,171
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to contract acquisition costs	(5,099)	(7,202)
Purchases of property and equipment, net	(4,984)	(5,960)
Additions to internally developed computer software	(4,435)	(4,478)
Additions to licensed computer software from vendors	(2,593)	(1,280)
Cash used in acquisitions, net of cash acquired	(1,750)
Purchase of private equity investments	(499)
Proceeds from sale of tradenames		4,500
Net cash used in investing activities	(19,360)	(14,420)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid on common stock	(18,913)	(13,556)
Principal payments on long-term debt borrowings and capital lease obligations	(6,505)	(8,551)
Subsidiary dividends paid to noncontrolling shareholders	(1,087)
Excess tax benefit from share-based payment arrangements	510	103
Purchase of noncontrolling interest		(174,050)
Repurchase of common stock		(35,700)
Proceeds from exercise of stock options	2,701	1,119
Net cash used in financing activities	(23,294)	(230,635)
CASH AND CASH EQUIVALENTS:
Effect of exchange rate changes on cash and cash equivalents	(641)	577
Net increase (decrease) in cash and cash equivalents	54,618	(142,307)
Cash and cash equivalents at beginning of period	316,337	394,795
Cash and cash equivalents at end of period	370,955	252,488
Supplemental cash flow information:
Interest paid	724	709
Income taxes paid, net	$ 4,144	$ 3,447