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Inventories (Tables)
 6 Months Ended
Jun. 30, 2017
Inventories  
Schedule of inventories

 

 

 

 

 

 

 

 

 

June 30,

 

December 31,

($ in millions)

    

2017

    

2016

 

 

 

 

 

 

 

Raw materials and supplies

 

$

665

 

$

607

Work-in-process and finished goods

 

 

896

 

 

839

Less inventory reserves

 

 

(37)

 

 

(33)

 

 

$

1,524

 

$

1,413