ASSET RETIREMENT OBLIGATIONS (Tables)
|12 Months Ended|
Dec. 31, 2016
|ASSET RETIREMENT OBLIGATIONS|
|Schedule of changes to asset retirement obligation liabilities||
The following table describes changes to our asset retirement obligation liabilities (dollars in millions):
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