XML 27 R15.htm IDEA: XBRL DOCUMENT v3.10.0.1
Inventories
 6 Months Ended
Jun. 30, 2018
Inventories  
Inventories

9.     Inventories

 

 

 

 

 

 

 

 

 

 

June 30,

 

December 31,

($ in millions)

    

2018

    

2017

 

 

 

 

 

 

 

Raw materials and supplies

 

$

727

 

$

691

Work-in-process and finished goods

 

 

587

 

 

902

Less inventory reserves

 

 

(57)

 

 

(67)

 

 

$

1,257

 

$

1,526