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Long-Term Debt (Tables) | 12 Months Ended
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Dec. 31, 2011
Long-Term Debt [Abstract] |
Long-term debt |
|  | December 31, |
|  | 2011 |  |  | 2010 |
Revolving credit facility due July 2016 |  | $ | 433,500 |  |  | $ | — |
Revolving credit facility due August 2012 |  |  | — |  |  |  | 50,395 |
Term loan |  |  | — |  |  |  | 615,943 |
2007 asset-backed securitization facility notes due July 2012 |  |  | — |  |  |  | 6,000 |
Partnership’s revolving credit facility due November 2015 |  |  | 395,500 |  |  |  | 299,000 |
Partnership’s term loan facility due November 2015 |  |  | 150,000 |  |  |  | 150,000 |
4.25% convertible senior notes due June 2014 (presented net of the unamortized discount of $54.9 million and $73.2 million, respectively) |  |  | 300,149 |  |  |  | 281,827 |
4.75% convertible senior notes due January 2014 |  |  | 143,750 |  |  |  | 143,750 |
7.25% senior notes due December 2018 |  |  | 350,000 |  |  |  | 350,000 |
Other, interest at various rates, collateralized by equipment and other assets |  |  | 140 |  |  |  | 232 |
Long-term debt |  | $ | 1,773,039 |  |  | $ | 1,897,147 |
Summary of contractual maturities of long-term debt (excluding interest to be accrued thereon) |
|  | December 31, 2011 |
2012 |  | $ | 140 | (1)
2013 |  |  | — |
2014 |  |  | 498,750 | (2)
2015 |  |  | 545,500 |
2016 |  |  | 433,500 |
Thereafter |  |  | 350,000 |
Total debt |  | $ | 1,827,890 |
(1) | Maturities of $0.1 million due in 2012 are classified as long-term because we have the intent and ability to refinance these maturities with our existing long-term credit facilities.
(2) | This amount includes the full face value of the 4.25% Notes and is not reduced by the unamortized discount of $54.9 million as of December 31, 2011.

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 470 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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