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Property, Plant and Equipment, Net
3 Months Ended
Mar. 31, 2013
Property, Plant and Equipment, Net [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
(3)
Property, Plant and Equipment, Net

Property, plant and equipment, net consists of the following (in millions):

 
 
 
As of
 
 
 
March 31,
 
December 31,
 
Depreciable Life
 
2013
 
2012
 
 
 
 
 
 
Property, plant and equipment
5-80 years
 
$
24,096

 
$
24,024

Accumulated depreciation and amortization
 
 
(7,338
)
 
(7,222
)
Net property, plant and equipment in service
 
 
16,758

 
16,802

Construction work-in-progress
 
 
1,376

 
1,255

Total property, plant and equipment, net
 
 
$
18,134

 
$
18,057