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Note 5. Property Plant and Equipment (Notes)
3 Months Ended
Mar. 31, 2015
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment consists of the following:
 
 
As of March 31, 2015
 
As of December 31, 2014
In millions
 
 
 
 
Land
 
$
125

 
$
7

Software
 
10

 
10

Buildings and improvements
 
91

 
98

Machinery and equipment
 
505

 
458

Renewable energy systems
 
5,935

 
4,709

Total property, plant and equipment in service, at cost
 
$
6,666

 
$
5,282

Less accumulated depreciation
 
(639
)
 
(572
)
Total property, plant and equipment in service, net
 
$
6,027

 
$
4,710

Construction in progress – renewable energy systems
 
1,396

 
956

Construction in progress – other
 
819

 
810

Total property, plant and equipment, net
 
$
8,242

 
$
6,476