Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.6
Supplemental Cash Flow Information and Disclosures of Non-Cash Transactions (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Supplemental Cash Flow Information [Abstract]    
Cash paid during the year for interest, net of amounts capitalized $ 117,190 $ 108,455
Construction-in-process funded with accrued liabilities $ 52,830 $ 0