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Net Gains on Sales of Fixed AssetsText Block (Notes)
3 Months Ended
Mar. 31, 2013
Gains (Losses) on Sales of Assets [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
Net Gains on Sales of Fixed Assets
For assets outside of our full cost pool, the costs of assets retired or otherwise disposed of and the applicable accumulated depreciation are removed from accounts, and the resulting gain or loss is reflected in operating costs. A summary of our gains or losses by asset class for the Current Quarter and Prior Quarter is as follows:
 
 
Three Months Ended March 31,
 
 
2013
 
2012
Gathering systems and treating plants(a)
 
$
69

 
$
1

Drilling rigs and equipment
 
(1
)
 

Buildings and land(b)
 
(22
)
 

Other
 
3

 
1

Total net gains on sales
 
$
49

 
$
2


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(a)
In the Current Quarter, we sold our interest in certain gathering system assets in Pennsylvania to Western Gas Partners, LP for proceeds of approximately $134 million. We recorded a $56 million pre-tax gain associated with this transaction.
(b)
In the Current Quarter, the net losses on sales of buildings and land were primarily from the sale of certain of our buildings and land in our Barnett Shale operating area.