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ASSET RETIREMENT OBLIGATIONS (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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| Schedule of changes to asset retirement obligation liabilities |
The following table describes changes to our asset retirement obligation liabilities, all of which were recorded in other noncurrent liabilities on the accompanying balance sheets (dollars in millions):
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- Details
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- Definition
Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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