CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flows from Operating Activities:
Net income (loss)	$ 94,897	$ 327,666
Loss (Income) from discontinued operations	5,732	14,319
(Gain) Loss on sale of discontinued operations	1,885	(193,349)
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	139,755	145,158
Amortization (includes deferred financing costs and bond discount of $2,857 and $3,444, for the six months ended June 30, 2011 and 2012, respectively)	19,207	16,730
Stock-based compensation expense	16,117	8,039
Provision (Benefit) for deferred income taxes	(38,699)	2,376
Loss on early extinguishment of debt, net		993
(Gain) Loss on disposal/write-down of property, plant and equipment, net	112	(684)
Foreign currency transactions and other, net	7,249	(6,161)
Changes in Assets and Liabilities (exclusive of acquisitions):
Accounts receivable	(24,461)	(36,010)
Prepaid expenses and other	23,943	(10,475)
Accounts payable	(4,043)	3,025
Accrued expenses and deferred revenue	(24,903)	(27,423)
Other assets and long-term liabilities	64	(2,991)
Cash Flows from Operating Activities-Continuing Operations	216,855	241,213
Cash Flows from Operating Activities-Discontinued Operations	(4,665)	1,844
Cash Flows from Operating Activities	212,190	243,057
Cash Flows from Investing Activities:
Capital expenditures	(107,361)	(99,184)
Cash paid for acquisitions, net of cash acquired	(107,290)	(75,172)
Investment in restricted cash	(1,502)	(3)
Additions to customer relationship and acquisition costs	(8,144)	(11,077)
Investment in joint ventures		(458)
Proceeds from sales of property and equipment and other, net	1,862	29
Cash Flows from Investing Activities-Continuing Operations	(222,435)	(185,865)
Cash Flows from Investing Activities-Discontinued Operations	(6,136)	376,352
Cash Flows from Investing Activities	(228,571)	190,487
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(1,768,694)	(1,593,705)
Proceeds from revolving credit and term loan facilities and other debt	1,888,264	1,676,069
Early retirement of senior subordinated notes		(231,255)
Debt financing (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	385	480
Stock repurchases	(38,052)	(260,970)
Parent cash dividends	(85,971)	(75,044)
Proceeds from exercise of stock options and employee stock purchase plan	11,029	69,501
Excess tax benefits from stock-based compensation	254	57
Payment of debt financing costs	(93)	(8,217)
Cash Flows from Financing Activities-Continuing Operations	7,122	(423,084)
Cash Flows from Financing Activities-Discontinued Operations	(39)	(411)
Cash Flows from Financing Activities	7,083	(423,495)
Effect of Exchange Rates on Cash and Cash Equivalents	(317)	2,682
Increase (Decrease) in Cash and Cash Equivalents	(9,615)	12,731
Cash and Cash Equivalents, Beginning of Period	179,845	258,693
Cash and Cash Equivalents, End of Period	170,230	271,424
Supplemental Information:
Cash Paid for Interest	114,475	107,542
Cash Paid for Income Taxes	83,830	68,601
Non-Cash Investing and Financing Activities:
Capital Leases	13,130	16,204
Accrued Capital Expenditures	22,691	17,058
Dividends Payable	$ 46,370	$ 50,695