CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 651,136	$ 179,111
Trust and restricted cash	14,886	14,518
Accounts receivable, net of allowance of $10,821 and $10,439	442,608	444,411
Deferred income taxes receivable	21,691	13,148
Prepaid assets	53,632	42,129
Deferred expenses	41,397	38,442
Other current assets	30,001	29,333
Total current assets	1,255,351	761,092
PROPERTY AND EQUIPMENT:
Property and equipment	1,224,023	1,209,873
Accumulated depreciation and amortization	(867,356)	(844,977)
Total property and equipment, net	356,667	364,896
GOODWILL	1,812,253	1,816,851
INTANGIBLE ASSETS, net of accumulated amortization of $483,840 and $469,534	270,708	285,672
OTHER ASSETS	245,953	219,642
TOTAL ASSETS	3,940,932	3,448,153
CURRENT LIABILITIES:
Accounts payable	102,662	120,247
Accrued expenses	384,685	312,296
Current maturities of long-term debt	470,159	25,125
Total current liabilities	957,506	457,668
LONG-TERM OBLIGATIONS, less current maturities	3,587,435	3,992,531
DEFERRED INCOME TAXES	128,913	132,398
OTHER LONG-TERM LIABILITIES	117,236	115,242
Total liabilities	4,791,090	4,697,839
COMMITMENTS AND CONTINGENCIES (Note 12)
STOCKHOLDERS' DEFICIT:
Common stock $0.001 par value, 475,000 shares authorized, 83,541 and 62,178 shares issued and 83,449 and 62,086 shares outstanding	83	62
Additional paid-in capital	2,122,755	1,720,639
Retained deficit	(2,938,893)	(2,941,948)
Accumulated other comprehensive loss (Note 10)	(28,795)	(23,131)
Treasury stock at cost (92 and 92 shares)	(5,308)	(5,308)
Total stockholders' deficit	(850,158)	(1,249,686)
TOTAL LIABILITIES AND STOCKHOLDERS' DEFICIT	$ 3,940,932	$ 3,448,153