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Inventories
6 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]  
Inventories
Note 3. Inventories

Inventories consisted of the following:
 
As of June 30,
2018
 
As of December 31,
2017
 
(in millions)
Raw materials
$
726

 
$
711

Finished product
2,070

 
1,975

 
2,796

 
2,686

Inventory reserves
(113
)
 
(129
)
Inventories, net
$
2,683

 
$
2,557