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DEBT (Maturities of Long-Term Debt) (Details) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
DEBT    
Remainder of 2011 $ 345,432  
2012 568,175  
2013 7,766  
2014 207,365  
2015 504,814  
2016 300,779  
Thereafter 2,313,980  
Total maturities of debt 4,248,311  
Unamortized discount (24,644)  
Fair value basis adjustment attributable to hedged debt 18,939  
Total long-term debt 4,242,606 2,990,156
Less: current portion of long-term debt (909,675) (348,996)
Long-term debt, net of current portion $ 3,332,931 $ 2,641,160