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SUPPLEMENTAL GUARANTOR FINANCIAL INFORMATION (Details 2) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2011
Dec. 31, 2010
ASSETS        
Current assets $ 1,191,210 $ 1,085,263    
Current assets associated with discontinued operations 40,005 38,664    
Total current assets 1,231,215 1,123,927    
Property, plant and equipment, net 2,835,059 2,934,664    
Intangible and other assets, net 208,029 222,851    
Long-term assets held for sale 294      
Long-term assets associated with discontinued operations 29,088 79,220    
Total long-term assets 3,072,470 3,236,735    
Total assets 4,303,685 4,360,662    
LIABILITIES AND EQUITY        
Current liabilities 692,506 653,739    
Current liabilities associated with discontinued operations 13,872 16,142    
Total current liabilities 706,378 669,881    
Long-term debt 1,803,906 1,773,039    
Other long-term liabilities 187,505 223,012    
Long-term liabilities associated with discontinued operations 16,341 14,688    
Total liabilities 2,714,130 2,680,620    
Total equity 1,589,555 1,680,042 1,978,088 1,802,424
Total liabilities and equity 4,303,685 4,360,662    
Parent
        
ASSETS        
Current assets 277 94    
Total current assets 277 94    
Investments in affiliates 1,492,092 1,531,223    
Intangible and other assets, net 35,883 57,556    
Intercompany receivables 991,627 1,092,298    
Total long-term assets 2,519,602 2,681,077    
Total assets 2,519,879 2,681,171    
LIABILITIES AND EQUITY        
Current liabilities 8,297 14,268    
Total current liabilities 8,297 14,268    
Long-term debt 1,160,370 1,227,399    
Other long-term liabilities   2,268    
Total liabilities 1,168,667 1,243,935    
Total equity 1,351,212 1,437,236    
Total liabilities and equity 2,519,879 2,681,171    
Guarantor Subsidiaries
        
ASSETS        
Current assets 721,516 562,964    
Total current assets 721,516 562,964    
Property, plant and equipment, net 1,309,128 1,504,399    
Investments in affiliates 1,395,337 1,456,782    
Intangible and other assets, net 42,183 78,835    
Intercompany receivables 91,354 96,378    
Total long-term assets 2,838,002 3,136,394    
Total assets 3,559,518 3,699,358    
LIABILITIES AND EQUITY        
Current liabilities 439,612 352,981    
Total current liabilities 439,612 352,981    
Intercompany payables 1,558,872 1,705,911    
Other long-term liabilities 68,942 109,243    
Total liabilities 2,067,426 2,168,135    
Total equity 1,492,092 1,531,223    
Total liabilities and equity 3,559,518 3,699,358    
Other Subsidiaries
        
ASSETS        
Current assets 468,525 522,193    
Current assets associated with discontinued operations 40,005 38,664    
Total current assets 508,530 560,857    
Property, plant and equipment, net 1,525,931 1,430,265    
Intangible and other assets, net 152,121 125,248    
Intercompany receivables 567,245 637,165    
Long-term assets held for sale 294      
Long-term assets associated with discontinued operations 29,088 79,220    
Total long-term assets 2,274,679 2,271,898    
Total assets 2,783,209 2,832,755    
LIABILITIES AND EQUITY        
Current liabilities 244,619 299,408    
Current liabilities associated with discontinued operations 13,872 16,142    
Total current liabilities 258,491 315,550    
Long-term debt 643,536 545,640    
Intercompany payables 91,354 119,930    
Other long-term liabilities 139,807 137,359    
Long-term liabilities associated with discontinued operations 16,341 14,688    
Total liabilities 1,149,529 1,133,167    
Total equity 1,633,680 1,699,588    
Total liabilities and equity 2,783,209 2,832,755    
Eliminations
        
ASSETS        
Current assets 892 12    
Total current assets 892 12    
Investments in affiliates (2,887,429) (2,988,005)    
Intangible and other assets, net (22,158) (38,788)    
Intercompany receivables (1,650,226) (1,825,841)    
Total long-term assets (4,559,813) (4,852,634)    
Total assets (4,558,921) (4,852,622)    
LIABILITIES AND EQUITY        
Current liabilities (22) (12,918)    
Total current liabilities (22) (12,918)    
Intercompany payables (1,650,226) (1,825,841)    
Other long-term liabilities (21,244) (25,858)    
Total liabilities (1,671,492) (1,864,617)    
Total equity (2,887,429) (2,988,005)    
Total liabilities and equity $ (4,558,921) $ (4,852,622)