CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows from Operating Activities:
Net income (loss)	$ 47,974	$ 94,897
Loss (Income) from discontinued operations	(2,086)	5,732
Loss (Gain)on sale of discontinued operations		1,885
Adjustments to reconcile net income (loss) to cash flows from operating activities:
Depreciation	139,914	139,755
Amortization (includes deferred financing costs and bond discount of $3,444 and $3,774, for the six months ended June 30, 2012 and 2013, respectively)	22,989	19,207
Stock-based compensation expense	13,593	16,117
(Benefit) Provision for deferred income taxes	20,593	(38,699)
Loss (Gain) on disposal/write-down of property, plant and equipment, net	(2,202)	112
Foreign currency transactions and other, net	39,865	7,249
Changes in Assets and Liabilities (exclusive of acquisitions):
Accounts receivable	(21,245)	(24,461)
Prepaid expenses and other	(14,734)	23,943
Accounts payable	6,838	(4,043)
Accrued expenses and deferred revenue	(38,988)	(24,903)
Other assets and long-term liabilities	437	64
Cash Flows from Operating Activities-Continuing Operations	212,948	216,855
Cash Flows from Operating Activities-Discontinued Operations	953	(4,665)
Cash Flows from Operating Activities	213,901	212,190
Cash Flows from Investing Activities:
Capital expenditures	(158,240)	(107,361)
Cash paid for acquisitions, net of cash acquired	(52,792)	(107,290)
Investment in restricted cash	(1)	(1,502)
Additions to customer relationship and acquisition costs	(8,261)	(8,144)
Proceeds from sales of property and equipment and other, net	2,899	1,862
Cash Flows from Investing Activities-Continuing Operations	(216,395)	(222,435)
Cash Flows from Investing Activities-Discontinued Operations	(18)	(6,136)
Cash Flows from Investing Activities	(216,413)	(228,571)
Cash Flows from Financing Activities:
Repayment of revolving credit and term loan facilities and other debt	(987,166)	(1,768,694)
Proceeds from revolving credit and term loan facilities and other debt	1,099,939	1,888,264
Debt financing (repayment to) and equity contribution from (distribution to) noncontrolling interests, net	874	385
Stock repurchases		(38,052)
Parent cash dividends	(103,309)	(85,971)
Proceeds from exercise of stock options and employee stock purchase plan	14,897	11,029
Excess tax benefits from stock-based compensation	2,394	254
Payment of debt financing costs	(711)	(93)
Cash Flows from Financing Activities-Continuing Operations	26,918	7,122
Cash Flows from Financing Activities-Discontinued Operations		(39)
Cash Flows from Financing Activities	26,918	7,083
Effect of Exchange Rates on Cash and Cash Equivalents	(8,955)	(317)
(Decrease) Increase in Cash and Cash Equivalents	15,451	(9,615)
Cash and Cash Equivalents, Beginning of Period	243,415	179,845
Cash and Cash Equivalents, End of Period	258,866	170,230
Supplemental Information:
Cash Paid for Interest	123,563	114,475
Cash Paid for Income Taxes	58,886	83,830
Non-Cash Investing and Financing Activities:
Capital Leases	30,097	13,130
Accrued Capital Expenditures	20,891	22,691
Dividends Payable	$ 54,274	$ 46,370