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Inventories (Tables)
6 Months Ended
Jun. 30, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories as of June 30, 2015 and December 31, 2014 were as follows:
In millions 
June 30, 2015
 
December 31, 2014
Raw material
$
454

 
$
458

Work-in-process
142

 
133

Finished goods
683

 
677

LIFO reserve
(88
)
 
(88
)
Total inventories
$
1,191

 
$
1,180