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Inventories (Tables)
 12 Months Ended
Dec. 31, 2018
INVENTORIES  
Inventories

 

($ in millions)

 

At December 31:

 

2018

 

2017

 

Finished goods

 

$
266

 

$
333

 

Work in process and raw materials

 
1,415

 
1,250

 

 

 

 

 

 

 

Total

 

$
1,682

 

$
1,583