CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows from Operating Activities:
Net income (loss)	$ 55,980	$ 74,619
Loss (Income) from discontinued operations	5,093	6,557
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	70,149	73,338
Amortization (includes deferred financing costs and bond discount of $1,426 and $1,742 for the three months ended March 31, 2011 and 2012, respectively)	9,601	8,251
Stock-based compensation expense	9,800	4,439
(Benefit) Provision for deferred income taxes	(9,814)	(7,903)
(Gain) Loss on early extinguishment of debt		(850)
(Gain) Loss on disposal/write-down of property, plant and equipment, net	719	(464)
Foreign currency transactions and other, net	(1,020)	(8,434)
Changes in Assets and Liabilities (exclusive of acquisitions):
Accounts receivable	(8,831)	(22,858)
Prepaid expenses and other current assets	(13,630)	13,157
Accounts payable	(2,433)	(5,419)
Accrued expenses, deferred revenue and other current liabilities	(36,629)	(24,744)
Other assets and long-term liabilities	74	729
Cash Flows from Operating Activities-Continuing Operations	79,059	110,418
Cash Flows from Operating Activities-Discontinued Operations	(4,175)	8,919
Cash Flows from Operating Activities	74,884	119,337
Cash Flows from Investing Activities:
Capital expenditures	(55,916)	(52,208)
Cash paid for acquisitions, net of cash acquired	(8,818)	(34,705)
Investment in restricted cash	(2)	(2)
Additions to customer relationship and acquisition costs	(3,008)	(2,893)
Investment in joint ventures		(50)
Proceeds from sales of property and equipment and other, net	1,853	166
Cash Flows from Investing Activities-Continuing Operations	(65,891)	(89,692)
Cash Flows from Investing Activities-Discontinued Operations	(1,141)	(9,299)
Cash Flows from Investing Activities	(67,032)	(98,991)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(635,539)	(428,548)
Proceeds from revolving credit and term loan facilities and other debt	701,105	607,418
Early retirement of senior subordinated notes		(231,255)
Debt financing (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	191	131
Stock repurchases	(38,052)	(10,970)
Parent cash dividends	(43,180)	(37,514)
Proceeds from exercise of stock options and employee stock purchase plan	1,321	9,164
Excess tax benefits from stock-based compensation	190	1,017
Payment of debt financing costs	(93)
Cash Flows from Financing Activities-Continuing Operations	(14,057)	(90,557)
Cash Flows from Financing Activities-Discontinued Operations	(39)	46
Cash Flows from Financing Activities	(14,096)	(90,511)
Effect of Exchange Rates on Cash and Cash Equivalents	4,692	1,289
(Decrease) Increase in Cash and Cash Equivalents	(1,552)	(68,876)
Cash and Cash Equivalents, Beginning of Period	179,845	258,693
Cash and Cash Equivalents, End of Period	178,293	189,817
Supplemental Information:
Cash Paid for Interest	56,083	65,008
Cash Paid for Income Taxes	38,060	20,575
Non-Cash Investing and Financing Activities:
Capital Leases	2,499	6,039
Accrued Capital Expenditures	21,166	21,095
Dividends Payable	$ 42,791	$ 37,601