Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net income/(loss)	$ 120,800	$ 97,399
Less: Loss from discontinued operations, net of tax	(3,205)	(18,142)
Less: (Loss)/gain from sale of discontinued operations, net of tax	(5,052)	9,277
Net income from continuing operations	129,057	106,264
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	99,333	93,434
Provision for bad debt and claim losses	9,582	16,447
Share-based compensation	20,810	16,211
Tax benefit related to stock options	(2,895)	(643)
Equity in earnings of affiliates, net of taxes	(23,848)	(29,381)
Loss on sale of property and equipment	0	933
Loss on early extinguishment of debt	0	326
Deferred income tax	3,875	5,538
(Loss)/gain on investment and other, net	(10,825)	3,865
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	(9,158)	(46,358)
Prepaid expenses and other current assets	(2,687)	(326)
Accounts payable and accrued expenses	(11,187)	31,725
Deferred revenue	43,610	(3,667)
Income taxes	13,853	24,683
Dividends received from investments in affiliates	30,062	46,265
Other assets and other liabilities	(24,466)	(6,527)
Net cash provided by operating activities - continuing operations	265,116	258,789
Net cash provided by operating activities - discontinued operations	(2,408)	9,684
Total cash provided by operating activities	262,708	268,473
Cash flows from investing activities:
Purchases of capitalized data and other intangible assets	(28,795)	(24,054)
Purchases of property and equipment	(51,956)	(38,753)
Cash paid for acquisitions, net of cash acquired	(70,904)	111
Purchases of investments	(2,351)	0
Proceeds from sale of subsidiary and other decreases in noncontrolling interest, net	800	10,000
Proceeds from sale of property and equipment	0	1,852
Proceeds from sale of investments	0	8,000
Change in restricted cash	5,728	122
Net cash used in investing activities - continuing operations	(147,478)	(42,722)
Net cash used in investing activities - discontinued operations	2,152	(1,512)
Total cash used in investing activities	(145,326)	(44,234)
Cash flows from financing activities:
Proceeds from long-term debt	1,075	0
Repayment of long-term debt	(4,516)	(114,365)
Proceeds from issuance of stock related to stock options and employee benefit plans	11,662	9,624
Minimum tax withholding paid on behalf of employees for restricted stock units	(6,893)	(3,015)
Shares repurchased and retired	(133,565)	(226,629)
Distribution to noncontrolling interests	0	(10)
Tax benefit related to stock options	2,895	643
Net cash used in financing activities - continuing operations	(129,342)	(333,752)
Net cash provided by financing activities - discontinued operations	0	3
Total cash used in financing activities	(129,342)	(333,749)
Effect of exchange rate on cash	(1,341)	0
Net increase in cash and cash equivalents	(13,301)	(109,510)
Cash and cash equivalents at beginning of period	148,858	259,266
Less: Change in cash and cash equivalents - discontinued operations	(256)	8,175
Plus: Cash swept (to)/from discontinued operations	(256)	12,971
Cash and cash equivalents at end of period	135,557	154,552
Supplemental disclosures of cash flow information:
Cash paid for interest	26,557	31,853
Cash paid for income taxes	62,188	39,029
Cash refunds from income taxes	$ 13,830	$ 15,639