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Inventories (Tables)
 12 Months Ended
Dec. 31, 2019
Inventory Disclosure [Abstract]  
Inventories
Inventories at December 31 consisted of:
 
2019
 
2018
Finished goods
$
1,772

 
$
1,658

Raw materials and work in process
5,650

 
5,004

Supplies
207

 
194

Total (approximates current cost)
7,629

 
6,856

(Decrease) increase to LIFO cost
(171
)
 
1

 
$
7,458

 
$
6,857

Recognized as:
 
 
 
Inventories
$
5,978

 
$
5,440

Other assets
1,480

 
1,417