Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 128,996	$ 74,467	$ 107,675
Less: (Loss)/income from discontinued operations, net of tax	(556)	(16,653)	14,423
Less: Gain/(loss) from sale of discontinued operations, net of tax	0	112	(7,008)
Income from continuing operations, net of tax	129,552	91,008	100,260
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	146,607	138,394	126,332
Impairment loss	3,770	4,970	44,433
Provision for bad debts and claim losses	8,260	11,825	13,345
Share-based compensation	35,786	25,379	26,901
Tax benefit related to stock options	(6,513)	(6,791)	(5,146)
Equity in earnings of investee, net of taxes	(13,720)	(14,120)	(27,361)
Loss/(gain) on sale of property and equipment	24	(13,866)	0
Loss on early extinguishment of debt	1,589	763	0
Deferred income tax	35,110	20,986	8,120
Gain on investments and other, net	(33,181)	(3,882)	(12,032)
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	(15,400)	13,151	24,553
Prepaid expenses and other assets	7,104	1,231	113
Accounts payable and accrued expenses	(45,289)	(5,000)	(9,330)
Deferred revenue	68,410	16,010	48,125
Income taxes	(32,771)	(11,380)	(27,543)
Dividends received from investments in affiliates	30,084	38,655	36,680
Other assets and other liabilities	16,727	28,260	(19,230)
Net cash provided by operating activities - continuing operations	336,149	335,593	328,220
Net cash (used in)/provided by operating activities - discontinued operations	(7,612)	(13,717)	25,600
Total cash provided by operating activities	328,537	321,876	353,820
Cash flows from investing activities:
Purchases of property and equipment	(44,149)	(52,025)	(68,745)
Purchases of capitalized data and other intangible assets	(36,409)	(35,129)	(37,841)
Cash paid for acquisitions, net of cash acquired	(194,491)	(694,871)	(92,049)
Cash received from sale of subsidiary, net	0	25,366	2,263
Purchases of investments	(3,748)	0	(2,351)
Proceeds from sale of property and equipment	137	13,937	0
Change in restricted cash	1,434	(310)	10,068
Net cash used in investing activities - continuing operations	(277,226)	(743,032)	(188,655)
Net cash provided by investing activities - discontinued operations	0	1,536	1,862
Total cash used in investing activities	(277,226)	(741,496)	(186,793)
Cash flows from financing activities:
Proceeds from long-term debt	114,375	690,017	51,647
Debt issuance costs	(6,452)	(14,042)	(10,436)
Repayments of long-term debt	(82,891)	(200,006)	(4,666)
Shares repurchased and retired	(97,430)	(91,475)	(241,161)
Proceeds from issuance of shares in connection with share-based compensation	22,569	15,213	28,232
Minimum tax withholdings related to net share settlements	(15,230)	(15,980)	(8,665)
Tax benefit related to stock options	6,513	6,791	5,146
Net cash (used in)/provided by financing activities - continuing operations	(58,546)	390,518	(179,903)
Net cash used in financing activities - discontinued operations	0	0	0
Total cash (used in)/provided by financing activities	(58,546)	390,518	(179,903)
Effect of Exchange Rate on cash	2,182	(625)	(2,116)
Net change in cash and cash equivalents	(5,053)	(29,727)	(14,992)
Cash and cash equivalents at beginning of year	104,677	134,419	149,568
Less: Change in cash and cash equivalents of discontinued operations	(7,612)	(12,181)	27,462
Plus: Cash swept (to)/from discontinued operations	(8,146)	(12,196)	27,305
Cash and cash equivalents at end of year	99,090	104,677	134,419
Supplemental disclosures of cash flow information:
Cash paid for interest	64,679	59,376	46,432
Cash paid for income taxes	47,783	5,436	71,055
Cash refunds from income taxes	3,737	27,545	14,096
Capital expenditures included in accounts payable and accrued liabilities	$ 5,909	$ 4,492	$ 2,339