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Income Taxes Income Taxes (Tables)
12 Months Ended
Dec. 31, 2014
Income Tax Disclosure [Abstract]  
Components of Income Tax Expense (Benefit) [Table Text Block]
Income tax expense (benefit) consists of the following for the years ended December 31 (in millions):
 
2014
 
2013
 
2012
 
 
 
 
 
 
Current:
 
 
 
 
 
Federal
$
2

 
$
54

 
$
(112
)
State
10

 
13

 
(3
)
Total
12

 
67

 
(115
)
 
 
 
 
 
 
Deferred:
 
 
 
 
 
Federal
260

 
204

 
283

State
43

 
29

 
33

Total
303

 
233

 
316

 
 
 
 
 
 
Investment tax credits
(6
)
 
(3
)
 
(4
)
Total income tax expense
$
309

 
$
297

 
$
197

Effective Income Tax Rate Reconciliation [Table Text Block]
A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows for the years ended December 31:
 
2014
 
2013
 
2012
 
 
 
 
 
 
Federal statutory income tax rate
35
 %
 
35
 %
 
35
 %
State income taxes, net of federal income tax benefit
3

 
3

 
3

Federal income tax credits(1)
(7
)
 
(7
)
 
(9
)
Other

 
(1
)
 
(2
)
Effective income tax rate
31
 %
 
30
 %
 
27
 %

(1)
Primarily attributable to the impact of federal renewable electricity production tax credits for qualifying wind-powered generating facilities that extend 10 years from the date the facilities were placed in-service.
Components of Net Deferred Income Tax Liability [Table Text Block]
The net deferred income tax liability consists of the following as of December 31 (in millions):
 
2014
 
2013
 
 
 
 
Deferred income tax assets:
 
 
 
Regulatory liabilities
$
362

 
$
355

Employee benefits
184

 
98

Derivative contracts and unamortized contract values
79

 
76

State carryforwards
68

 
68

Loss contingencies
70

 
67

Asset retirement obligations
47

 
48

Other
92

 
86

 
902

 
798

Deferred income tax liabilities:
 
 
 
Property, plant and equipment
(4,780
)
 
(4,528
)
Regulatory assets
(647
)
 
(525
)
Other
(56
)
 
(38
)
 
(5,483
)
 
(5,091
)
Net deferred income tax liability
$
(4,581
)
 
$
(4,293
)
 
 
 
 
Reflected as:
 
 
 
Deferred income taxes - current assets
$
28

 
$
66

Deferred income taxes - noncurrent liabilities
(4,609
)
 
(4,359
)
 
$
(4,581
)
 
$
(4,293
)


Summary of Operating Loss Carryforwards [Table Text Block]
The following table provides PacifiCorp's net operating loss and tax credit carryforwards and expiration dates as of December 31, 2014 (in millions):
 
 
State
 
 
 
Net operating loss carryforwards
 
$
1,417

Deferred income taxes on net operating loss carryforwards
 
$
52

Expiration dates
 
2015 - 2032

 
 
 
Tax credit carryforwards
 
$
16

Expiration dates
 
2015 - indefinite