v2.4.0.6

Asset Retirement Obligations (Tables) | 12 Months Ended
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Dec. 31, 2011
Asset Retirement Obligations [Abstract] |
Schedule Of Asset Retirement Obligations |
| Year Ended December 31,
| 2011 | 2010
| (In millions)
Asset retirement obligations as of beginning of year | $ 1,497 | $ 1,513
Liabilities incurred | 53 | 55
Liabilities settled | (82) | (129)
Revision of estimated obligation | 25 | 194
Liabilities assumed by others | — | (269)
Accretion expense on discounted obligation | 92 | 92
Foreign currency translation adjustment | (22) | 41
Asset retirement obligations as of end of year | 1,563 | 1,497
Less current portion | 67 | 74
Asset retirement obligations, long-term | $ 1,496 | $ 1,423

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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 -Topic 410 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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