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Inventories (Tables)
9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Inventories
Inventories as of September 30, 2017 and December 31, 2016 were as follows:
In millions 
September 30, 2017
 
December 31, 2016
Raw material
$
453

 
$
407

Work-in-process
148

 
126

Finished goods
709

 
629

LIFO reserve
(85
)
 
(86
)
Total inventories
$
1,225

 
$
1,076