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Other Property and Equipment Other Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment [Table Text Block]
At December 31, other property and equipment consisted of the following:
 
 
2016
 
2015
 
 
(In millions)
Furniture, fixtures and equipment
 
$
150

 
$
152

Gathering systems and equipment
 
115

 
115

Accumulated depreciation and amortization
 
(98
)
 
(95
)
Net other property and equipment
 
$
167

 
$
172