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Inventories
12 Months Ended
Dec. 31, 2018
Inventory Disclosure [Abstract]  
Inventories Note 3. Inventories

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

 
$
711

Finished product
1,987

 
1,975

 
2,713


2,686

Inventory reserves
(121
)
 
(129
)
Inventories, net
$
2,592


$
2,557