v2.4.0.6

Asset Retirement Obligations (Tables) | 3 Months Ended
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Mar. 31, 2013
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 three-month periods ended March 31, 2013 and 2012 (in thousands):
|  | Three Months Ended |
|  | March 31, |
|  | 2013 |  |  | 2012 |
Carrying Amount at Beginning of Period |  | $ | 665,944 |  |  | $ | 587,084 |
Liabilities Incurred |  |  | 12,592 |  |  |  | 10,873 |
Liabilities Settled (1) |  |  | (24,831 | ) |  |  | (25,347 | )
Accretion |  |  | 9,660 |  |  |  | 7,751 |
Revisions |  |  | 67 |  |  |  | 5 |
Foreign Currency Translations |  |  | (5,201 | ) |  |  | 3,078 |
Carrying Amount at End of Period |  | $ | 658,231 |  |  | $ | 583,444 |
Current Portion |  | $ | 19,186 |  |  | $ | 42,457 |
Noncurrent Portion |  | $ | 639,045 |  |  | $ | 540,987 |
(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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