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Divestitures
3 Months Ended
Mar. 31, 2015
Divestitures [Abstract]  
Divestitures
Divestitures
Onshore US Properties   During the first three months of 2015, we sold certain onshore US crude oil and natural gas leases. Properties sold generated net proceeds of $119 million, which were applied to the DJ Basin depletable field, with no recognition of gain or loss.
Information regarding assets sold during the first three months of 2014 is as follows:
 
Three Months Ended
March 31,
(millions)
2014
Sales Proceeds
$
92

Less
 
     Net Book Value of Assets Sold
(106
)
     Goodwill Allocated to Assets Sold
(6
)
     Asset Retirement Obligations Associated with Assets Sold
20

     Other Closing Adjustments
(1
)
Gain on Divestitures
$
(1
)