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Supplemental Cash Flow Information	9 Months Ended
Supplemental Cash Flow Information	Sep. 30, 2011
Supplemental Cash Flow Information [Abstract]
SUPPLEMENTAL CASH FLOW INFORMATION	SUPPLEMENTAL CASH FLOW INFORMATION During the nine months ended September 30, 2011, we paid $138.1 million in interest, net of amounts capitalized, and received $62.7 million in net refunds from income taxes. During the nine months ended September 30, 2010, we paid $101.2 million in interest, net of amounts capitalized, and $162.0 million in income taxes, net of refunds. As of September 30, 2011 and 2010, the amount of accounts payable related to capital expenditures was $19.2 million and $18.2 million, respectively.