Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net income	$ 125,622	$ 104,059
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in income of equity investments, net of tax	(5,026)	(2,885)
Dividends received from equity investments	1,098	13
Net loss on foreign currency translation	1,635	574
Depreciation and amortization	84,086	83,035
Amortization of debt issuance costs	94	77
Share-based compensation	8,626	8,644
Excess tax benefit from share-based payment arrangements	(653)	(54)
Asset impairments		1,298
Provisions for bad debt expenses and billing adjustments	356	873
Charges for transaction processing provisions	971	2,632
Deferred income tax expense (benefit)	1,746	(9,738)
Loss (gain) on disposal of equipment, net	29	(1,429)
Changes in operating assets and liabilities:
Accounts receivable	(376)	19,410
Prepaid expenses, other current assets and other long-term assets	(4,691)	4,508
Accounts payable	2,743	(13,239)
Accrued salaries and employee benefits	(18,602)	(11,489)
Other current liabilities and other long-term liabilities	5,746	13,005
Net cash provided by operating activities	203,404	199,294
Cash flows from investing activities:
Purchases of property and equipment, net	(13,810)	(12,543)
Additions to licensed computer software from vendors	(17,278)	(5,882)
Additions to internally developed computer software	(10,121)	(9,242)
Proceeds from sale of trade name		4,500
Cash used in acquisitions, net of cash acquired	(1,750)	(45,287)
Purchase of private equity investments	(623)
Additions to contract acquisition costs	(16,740)	(16,007)
Net cash used in investing activities	(60,322)	(84,461)
Cash flows from financing activities:
Principal payments on long-term debt borrowings and capital lease obligations	(13,038)	(14,494)
Proceeds from borrowings of long-term debt	8,633
Proceeds from exercise of stock options	4,698	1,339
Excess tax benefit from share-based payment arrangements	653	54
Purchase of noncontrolling interest		(174,050)
Repurchase of common stock	(338)	(35,700)
Subsidiary dividends paid to noncontrolling shareholders	(1,087)	(448)
Dividends paid on common stock	(37,809)	(27,129)
Net cash used in financing activities	(38,288)	(250,428)
Cash and cash equivalents:
Effect of exchange rate changes on cash and cash equivalents	(2,488)	4,134
Net increase (decrease) in cash and cash equivalents	102,306	(131,461)
Cash and cash equivalents at beginning of period	316,337	394,795
Cash and cash equivalents at end of period	418,643	263,334
Supplemental cash flow information:
Interest paid	1,418	1,558
Income taxes paid, net	$ 47,050	$ 38,002