v2.4.0.6

Asset Retirement Obligations (Tables) | 9 Months Ended
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Sep. 30, 2012
Asset Retirement Obligations [Abstract] |
Asset Retirement Obligation Rollforward Analysis | The following table presents the reconciliation of the beginning and ending aggregate carrying amounts of short-term and long-term legal obligations associated with the retirement of property, plant and equipment for the nine-month periods ended September 30, 2012 and 2011 (in thousands):
|  | Nine Months Ended |
|  | September 30, |
|  | 2012 |  |  | 2011 |
Carrying Amount at Beginning of Period |  | $ | 587,084 |  |  | $ | 498,288 |
Liabilities Incurred |  |  | 47,320 |  |  |  | 45,754 |
Liabilities Settled (1) |  |  | (56,150 | ) |  |  | (58,084 | )
Accretion |  |  | 22,714 |  |  |  | 20,125 |
Revisions |  |  | 12,709 |  |  |  | 61,668 |
Foreign Currency Translations |  |  | 5,140 |  |  |  | (3,688 | )
Carrying Amount at End of Period |  | $ | 618,817 |  |  | $ | 564,063 |
Current Portion |  | $ | 27,615 |  |  | $ | 30,306 |
Noncurrent Portion |  | $ | 591,202 |  |  | $ | 533,757 |
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(1) | Includes settlements related to asset sales.

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- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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