Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income/(loss)	$ 107,675	$ 111,648	$ (73,629)
Less: (Loss)/income from discontinued operations, net of tax	(15,464)	17,623	(95,712)
Less: (Loss)/gain from sale of discontinued operations, net of tax	(7,008)	3,841	0
Income from continuing operations, net of tax	130,147	90,184	22,083
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	127,020	121,784	108,063
Provision for bad debts and claim losses	13,739	19,540	17,084
Share-based compensation	26,613	20,684	11,209
Tax benefit related to stock options	(5,146)	(935)	(344)
Equity in earnings of investee, net of taxes	(27,361)	(35,983)	(30,515)
Loss/(gains) on sale of property	0	951	(8,061)
Loss on early extinguishment of debt	0	326	10,190
Deferred income tax	12,090	34,678	(7,401)
(Gain)/loss on investments and other, net	(12,032)	2,516	(60,750)
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	21,196	(40,610)	(8,242)
Prepaid expenses and other assets	(935)	4,055	(17,669)
Accounts payable and accrued expenses	(9,652)	61,408	(31,143)
Deferred revenue	47,123	10,824	(18,782)
Income taxes	(27,543)	(15,707)	80,183
Dividends received from investments in affiliates	36,680	70,666	42,929
Other assets and other liabilities	(29,526)	(24,436)	34,909
Net cash provided by operating activities - continuing operations	302,413	319,945	143,743
Net cash provided by operating activities - discontinued operations	51,408	43,200	19,253
Total cash provided by operating activities	353,821	363,145	162,996
Cash flows from investing activities:
Purchases of property and equipment	(68,740)	(48,266)	(41,153)
Purchases of capitalized data and other intangible assets	(37,841)	(32,189)	(27,009)
Cash paid for acquisitions, net of cash acquired	(92,049)	(78,354)	(214,215)
Cash received from sale of subsidiary, net	2,263	10,000	28,054
Purchases of investments	(2,351)	0	(26,398)
Proceeds from sale of property and equipment	0	1,863	25,042
Proceeds from sale of investments	0	8,000	74,621
Change in restricted cash	10,068	86	2,091
Net cash used in investing activities - continuing operations	(188,650)	(138,860)	(178,967)
Net cash provided by/(used in) investing activities - discontinued operations	1,857	(8,482)	(8,706)
Total cash used in investing activities	(186,793)	(147,342)	(187,673)
Cash flows from financing activities:
Purchases of redeemable noncontrolling interests	0	0	(72,000)
Proceeds from long-term debt	51,647	50,000	858,154
Debt issuance costs	(10,436)	0	(22,810)
Repayments of long-term debt	(4,666)	(166,715)	(733,407)
Shares repurchased and retired	(241,161)	(226,629)	(176,512)
Proceeds from issuance of stock related to stock options and employee benefit plans	28,232	13,497	3,087
Minimum tax withholding paid on behalf of employees for restricted stock units	(8,665)	(3,466)	(2,023)
Distribution to noncontrolling interests	0	(10)	(4,835)
Tax benefit related to stock options	5,146	935	344
Net cash used in financing activities - continuing operations	(179,903)	(332,388)	(150,002)
Net cash (used in)/provided by financing activities - discontinued operations	0	(79)	64
Total cash used in financing activities	(179,903)	(332,467)	(149,938)
Effect of Exchange Rate on cash	(2,116)	(153)	65
Net decrease in cash and cash equivalents	(14,991)	(116,817)	(174,550)
Cash and cash equivalents at beginning of year	151,986	260,029	419,701
Less: Change in cash and cash equivalents of discontinued operations	53,265	34,639	10,611
Plus: Cash swept from discontinued operations	51,011	43,413	25,489
Cash and cash equivalents at end of year	134,741	151,986	260,029
Supplemental disclosures of cash flow information:
Cash paid for interest	46,432	51,828	57,851
Cash paid for income taxes	71,055	71,283	36,480
Cash refunds from income taxes	14,096	18,330	50,157
Non-cash investing and financing activities:
Adjustment of carrying value of mandatorily redeemable noncontrolling interest	0	0	(3,800)
Notes Issued	$ 0	$ 0	$ 12,700