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Property, Plant and Equipment, Net (Notes)
9 Months Ended
Sep. 30, 2014
Property, Plant and Equipment, Net [Abstract]  
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following (in millions):
 
As of
 
September 30,
 
December 31,
 
2014
 
2013
Utility plant in-service:
 
 
 
Electric generation
$
1,054

 
$
1,070

Electric distribution
1,314

 
1,289

Electric transmission
718

 
685

Electric intangible plant
127

 
138

Natural gas distribution
361

 
357

Natural gas intangible plant
13

 
13

Common general
235

 
212

Utility plant in-service
3,822

 
3,764

Accumulated depreciation and amortization
(1,334
)
 
(1,301
)
Utility plant in-service, net
2,488

 
2,463

Construction work-in-progress
99

 
89

Property, plant and equipment, net
$
2,587

 
$
2,552