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PROPERTY, PLANT AND EQUIPMENT
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure
PROPERTY, PLANT AND EQUIPMENT:
The following table provides a summary of property, plant and equipment at the dates indicated:

 

 
Successor
 
 
Predecessor

 
Lives in Years
 
December 31,
2012
 
 
December 31,
2011
Transmission
 
5 – 46
 
$
2,580

 
 
$
2,321

Gathering
 
26
 
114

 
 
108

Underground storage
 
5 – 46
 
306

 
 
322

General plant - LNG
 
5 – 40
 
966

 
 
1,119

General plant - other
 
3 – 40
 
110

 
 
176

Plant in service
 
 
 
4,076

 
 
4,046

Construction work in progress
 
 
 
45

 
 
42

Total property, plant and equipment
 
 
 
4,121

 
 
4,088

Accumulated depreciation and amortization
 
 
 
(57
)
 
 
(733
)
Net property, plant and equipment
 
 
 
$
4,064

 
 
$
3,355


As of December 31, 2011, property, plant and equipment included capitalized computer software costs of $34 million, net of accumulated amortization of $51 million. Amortization expense of capitalized computer software costs for the years ended December 31, 2011 and 2010 was $7 million and $7 million, respectively.
As of December 31, 2011, property, plant and equipment included contributions in aid of construction costs of $49 million, net of accumulated amortization of $5 million. Amortization expense of contributions in aid of construction costs for the years ended December 31, 2011 and 2010 was $2 million and $2 million, respectively.