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STATEMENTS OF CASH FLOWS Table 2 (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Supplemental Cash Flow Information [Line Items]    
Cash paid for interest, net of amount capitalized $ 85,583 $ 87,576
Cash paid for income taxes, net of tax refunds received $ 18,308 $ 11,974