Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income/(loss)	$ 77,093	$ 59,129
Less: Loss from discontinued operations, net of tax	(1,966)	(7,985)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	0	(2,987)
Net income from continuing operations	79,059	70,101
Adjustments to reconcile net income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	69,638	60,397
Provision for bad debt and claim losses	8,733	11,205
Share-based compensation	16,933	9,031
Tax benefit related to stock options	(2,652)	(109)
Equity in earnings of affiliates, net of taxes	(18,132)	(21,215)
Loss on sale of property and equipment	0	960
Loss on early extinguishment of debt	0	353
Deferred income tax	3,737	903
(Loss)/gain on investment and other, net	(3,198)	(389)
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	(5,721)	(26,187)
Prepaid expenses and other current assets	(341)	878
Accounts payable and accrued expenses	(26,417)	2,257
Deferred revenue	26,252	(1,892)
Income taxes	15,086	47,154
Dividends received from investments in affiliates	23,868	37,219
Other assets and other liabilities	(18,883)	(7,599)
Net cash provided by operating activities - continuing operations	167,962	183,067
Net cash provided by operating activities - discontinued operations	(1,288)	9,490
Total cash provided by operating activities	166,674	192,557
Cash flows from investing activities:
Purchases of capitalized data and other intangible assets	(18,928)	(15,397)
Purchases of property and equipment	(34,672)	(24,939)
Cash paid for acquisitions, net of cash acquired	(6,852)
Purchases of investments	(2,351)	0
Proceeds from sale of subsidiary and other decreases in noncontrolling interest, net	800	0
Proceeds from sale of property and equipment	0	1,832
Change in restricted cash	2,093	123
Net cash used in investing activities - continuing operations	(59,910)	(38,381)
Net cash used in investing activities - discontinued operations	0	(4,745)
Total cash used in investing activities	(59,910)	(43,126)
Cash flows from financing activities:
Proceeds from long-term debt	551	0
Repayment of long-term debt	(4,423)	(113,825)
Proceeds from issuance of stock related to stock options and employee benefit plans	7,119	768
Minimum tax withholding paid on behalf of employees for restricted stock units	(6,680)	(2,577)
Shares repurchased and retired	(75,676)	(28,744)
Distribution to noncontrolling interests	0	(10)
Tax benefit related to stock options	2,652	109
Net cash used in financing activities - continuing operations	(76,457)	(144,279)
Net cash provided by financing activities - discontinued operations	0	2
Total cash used in financing activities	(76,457)	(144,277)
Effect of Exchange Rate on Cash	(2,574)	0
Net increase/(decrease) in cash and cash equivalents	27,733	5,154
Cash and cash equivalents at beginning of period	148,858	259,266
Less: Change in cash and cash equivalents - discontinued operations	(1,288)	4,747
Plus: Cash swept to discontinued operations	(1,288)	0
Cash and cash equivalents at end of period	176,591	259,673
Supplemental disclosures of cash flow information:
Cash paid for interest	23,326	27,632
Cash paid for income taxes	37,935	8,708
Cash refunds from income taxes	$ 13,810	$ 14,394