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Inventory (Tables)
 6 Months Ended
Jun. 30, 2015
Inventory [Abstract]  
Components Of Inventory

 

 

 

 

 

 

 

June 30,

 

December 31,

 

2015

 

2014

 

(in millions)

Tubulars and other equipment

$
32 

 

$
33 

Natural gas in underground storage

$
2 

 

$
4