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Asset Retirement Obligations
3 Months Ended
Mar. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations

Note 5 — Asset Retirement Obligations

The change in our asset retirement obligations during the three months ended March 31, 2014 is set forth below:

 

     Three Months
Ended

March 31, 2014
 
     (In millions)  

Asset retirement obligations as of the beginning of the period, including current portion

   $ 502.5   

Liabilities incurred

     14.2   

Liabilities settled

     (9.8

Divestment of properties

     (10.4

Accretion expense

     7.6   
  

 

 

 

Asset retirement obligations as of the end of the period, including current portion

   $ 504.1