v2.4.0.8

Asset Retirement Obligations (Tables) | 6 Months Ended
--- | ---
Jun. 30, 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 six-month periods ended June 30, 2013 and 2012 (in thousands):
|  | Six Months Ended |
|  | June 30, |
|  | 2013 |  |  | 2012 |
Carrying Amount at Beginning of Period |  | $ | 665,944 |  |  | $ | 587,084 |
Liabilities Incurred |  |  | 24,660 |  |  |  | 29,799 |
Liabilities Settled (1) |  |  | (31,155 | ) |  |  | (47,920 | )
Accretion |  |  | 17,865 |  |  |  | 15,316 |
Revisions |  |  | 67 |  |  |  | 52 |
Foreign Currency Translations |  |  | (11,192 | ) |  |  | (871 | )
Carrying Amount at End of Period |  | $ | 666,189 |  |  | $ | 583,460 |
Current Portion |  | $ | 16,949 |  |  | $ | 28,496 |
Noncurrent Portion |  | $ | 649,240 |  |  | $ | 554,964 |
| (1) | Includes settlements related to asset sales.

X
- Details
Name: | us-gaap_AssetRetirementObligationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_ScheduleOfAssetRetirementObligationsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration