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Landfill and Environmental Remediation Liabilities
9 Months Ended
Sep. 30, 2013
Text Block [Abstract]  
Landfill and Environmental Remediation Liabilities

2.    Landfill and Environmental Remediation Liabilities

Liabilities for landfill and environmental remediation costs are presented in the table below (in millions):

 

     September 30, 2013      December 31, 2012  
     Landfill      Environmental
Remediation
     Total      Landfill      Environmental
Remediation
     Total  

Current (in accrued liabilities)

   $ 99       $ 28       $ 127       $ 104       $ 28       $ 132   

Long-term

     1,299         208         1,507         1,234         225         1,459   
  

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

 
   $ 1,398       $ 236       $ 1,634       $ 1,338       $ 253       $ 1,591   
  

 

 

    

 

 

    

 

 

    

 

 

    

 

 

    

 

 

 

The changes to landfill and environmental remediation liabilities for the year ended December 31, 2012 and the nine months ended September 30, 2013 are reflected in the table below (in millions):

 

     Landfill     Environmental
Remediation
 

December 31, 2011

   $ 1,292      $ 273   

Obligations incurred and capitalized

     58          

Obligations settled

     (87     (30

Interest accretion

     84        4   

Revisions in cost estimates and interest rate assumptions

     (8     5   

Acquisitions, divestitures and other adjustments

     (1     1   
  

 

 

   

 

 

 

December 31, 2012

     1,338        253   

Obligations incurred and capitalized

     45          

Obligations settled

     (53     (15

Interest accretion

     65        3   

Revisions in cost estimates and interest rate assumptions

            (4

Acquisitions, divestitures and other adjustments

     3        (1
  

 

 

   

 

 

 

September 30, 2013

   $ 1,398      $ 236   
  

 

 

   

 

 

 

At several of our landfills, we provide financial assurance by depositing cash into restricted trust funds or escrow accounts for purposes of settling final capping, closure, post-closure and environmental remediation obligations. Generally, these trust funds are established to comply with statutory requirements and operating agreements. See Note 14 for additional information related to these trusts.