v3.8.0.1
Inventories (Tables)
12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Inventories
(In millions)
 
December 31, 2017
 
December 31, 2016
Raw materials
 
$
527

 
$
449

Semi-finished products
 
796

 
686

Finished products
 
356

 
375

Supplies and sundry items
 
59

 
63

Total
 
$
1,738

 
$
1,573