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Asset Retirement Obligations Asset Retirement Obligations (Tables)
 12 Months Ended
Dec. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]  
Asset Retirement Obligations Disclosure [Table Text Block]
The following table reconciles the beginning and ending balances of PacifiCorp's ARO liabilities for the years ended December 31 (in millions):

 
2014
 
2013
 
 
 
 
Beginning balance
$
138

 
$
127

Change in estimated costs
(3
)
 
3

Additions
—

 
8

Retirements
(6
)
 
(6
)
Accretion
6

 
6

Ending balance
$
135

 
$
138

 
 
 
 
Reflected as:
 
 
 
Other current liabilities
$
21

 
$
18

Other long-term liabilities
114

 
120

 
$
135

 
$
138