Supplemental Cash Flow Information and Disclosures of Non-Cash Transactions (Tables)

9 Months Ended

Sep. 30, 2012

Supplemental Cash Flow Information [Abstract]

Supplemental cash flow information and disclosures of non-cash transactions

The following table provides supplemental disclosure of cash flow information (in thousands): 

	Nine Months Ended
	September 30,
	2012		2011
Cash paid during the period for interest, net of amounts capitalized	$	117,190	$	108,455
Construction-in-process funded with accrued liabilities	$	52,830	$	—