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Other long-term obligations
 12 Months Ended
Dec. 31, 2014
Other long-term obligations

5. Other long-term obligations

 

millions of dollars

      2014                       2013  

Employee retirement benefits (a)(note 4)

        1,739                          1,448   

Asset retirement obligations and other environmental liabilities (b)

        1,325                          1,258   

Share-based incentive compensation liabilities (note 7)

        154                          140   

Other obligations (note 16)

        347                          245   

Total other long-term obligations

        3,565                          3,091   
  (a) Total recorded employee retirement benefit obligations also include $58 million in current liabilities (2013 – $53 million).
  (b) Total asset retirement obligations and other environmental liabilities also include $143 million in current liabilities (2013 – $154 million).

Asset retirement obligations incurred in the current period were Level 3 fair value measurements. The following table summarizes the activity in the liability for asset retirement obligations:

 

millions of dollars    2014           2013  

Balance as at January 1

      1,237              966   

Additions

      184              251   

Reductions due to property sales

      (153)             -   

Accretion

      105              105   

Settlement

      (81)             (85 ) 

Balance as at December 31

      1,292              1,237