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Annual report pursuant to Section 13 and 15(d)

ASSET RETIREMENT OBLIGATIONS

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ASSET RETIREMENT OBLIGATIONS
12 Months Ended
Dec. 31, 2011
ASSET RETIREMENT OBLIGATIONS Ìý
ASSET RETIREMENT OBLIGATIONS

12. ASSET RETIREMENT OBLIGATIONS

ÌýÌýÌýÌýÌýÌýÌýÌýAsset retirement obligations consist primarily of landfill capping, closure and post-closure costs and asbestos abatement costs. We are legally required to perform capping and closure and post-closure care on the landfills and asbestos abatement on certain of our premises. For each asset retirement obligation we recognized the estimated fair value of a liability and capitalized the cost as part of the cost basis of the related asset.

ÌýÌýÌýÌýÌýÌýÌýÌýThe 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):

Ìý
Ìý DecemberÌý31, Ìý
Ìý
Ìý 2011 Ìý 2010 Ìý

Asset retirement obligation at beginning of year

Ìý $ 24 Ìý $ 21 Ìý

Accretion expense

Ìý Ìý 2 Ìý Ìý 1 Ìý

Liabilities incurred

Ìý Ìý â€� Ìý Ìý 1 Ìý

Liabilities assumed in connection with the consolidation of a variable interest entity

Ìý Ìý 2 Ìý Ìý â€� Ìý

Liabilities settled

Ìý Ìý (1 ) Ìý â€� Ìý

Foreign currency effect on reserve balance

Ìý Ìý (1 ) Ìý 1 Ìý
Ìý Ìý Ìý Ìý Ìý Ìý

Asset retirement obligation at end of year

Ìý $ 26 Ìý $ 24 Ìý
Ìý Ìý Ìý Ìý Ìý Ìý