Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 87,453	$ 102,967
Less: Income/(loss) from discontinued operations, net of tax	2,421	(998)
Less: Gain from sale of discontinued operations, net of tax	310	0
Net income from continuing operations	84,722	103,965
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	131,668	127,433
Amortization of debt issuance costs	4,263	4,333
Provision for bad debt and claim losses	12,268	11,064
Share-based compensation	29,558	29,859
Excess tax benefit related to stock options	0	(2,352)
Equity in losses/(earnings) of affiliates, net of taxes	1,232	(595)
Gain on sale of property and equipment	(227)	(21)
Deferred income tax	(7,038)	10,283
(Loss)/gain on Investments and other, net	6,513	17,873
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	(5,655)	(36,737)
Prepaid expenses and other current assets	2,414	(8,671)
Accounts payable and accrued expenses	(40,681)	(3,393)
Deferred revenue	26,037	35,814
Income taxes	644	32,981
Dividends received from investments in affiliates	1,198	8,773
Other assets and other liabilities	21,765	(13,335)
Net cash provided by operating activities - continuing operations	268,681	317,274
Net cash provided by/(used in) operating activities - discontinued operations	3,660	(468)
Total cash provided by operating activities	272,341	316,806
Cash flows from investing activities:
Purchase of subsidiary shares from noncontrolling interests	0	(18,023)
Purchases of property and equipment	(28,534)	(35,156)
Purchases of capitalized data and other intangible assets	(25,744)	(27,212)
Cash paid for acquisitions, net of cash acquired	(189,442)	(396,816)
Purchases of investments	0	(3,366)
Proceeds from sale of property and equipment	316	21
Proceeds from sale of investments	0	2,451
Change in restricted cash	5,481	1,990
Net cash used in investing activities - continuing operations	(237,923)	(476,111)
Net cash used in investing activities - discontinued operations	0	0
Total cash used in investing activities	(237,923)	(476,111)
Cash flows from financing activities:
Proceeds from long-term debt	1,995,000	915,000
Debt issuance costs	(14,294)	(6,314)
Repayment of long-term debt	(1,796,661)	(647,286)
Debt extinguishment premium	0	(14,246)
Proceeds from issuance of shares in connection with share-based compensation	6,330	13,119
Payment of tax withholdings related to net share settlements	(13,629)	(9,544)
Shares repurchased and retired	(132,460)	(112,961)
Excess tax benefit related to stock options	0	2,352
Net cash provided by financing activities - continuing operations	44,286	140,120
Net cash provided by financing activities - discontinued operations	0	0
Total cash provided by financing activities	44,286	140,120
Effect of exchange rate on cash and cash equivalents	(1,324)	(890)
Net change in cash and cash equivalents	77,380	(20,075)
Cash and cash equivalents at beginning of period	72,031	99,090
Less: Change in cash and cash equivalents - discontinued operations	3,660	(468)
Plus: Cash swept from/(to) discontinued operations	3,660	(468)
Cash and cash equivalents at end of period	149,411	79,015
Supplemental disclosures of cash flow information:
Cash paid for interest	37,283	45,075
Cash paid for income taxes	45,702	12,633
Cash refunds from income taxes	524	489
Non-cash investing activities:
Capital expenditures included in accounts payable and accrued liabilities	$ 6,281	$ 4,105