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Inventories
6 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventories
INVENTORIES
Processed products, livestock and supplies and other are valued at the lower of cost and net realizable value. Cost includes purchased raw materials, live purchase costs, growout costs (primarily feed, grower pay and catch and haul costs), labor and manufacturing and production overhead, which are related to the purchase and production of inventories.
At March 31, 2018, 64% of the cost of inventories was determined by the first-in, first-out ("FIFO") method as compared to 63% at September 30, 2017. The remaining cost of inventories for both periods is determined by the weighted-average method.
The following table reflects the major components of inventory (in millions):
 
March 31, 2018
 
September 30, 2017
Processed products
$
1,960

 
$
1,947

Livestock
930

 
874

Supplies and other
438

 
418

Total inventory
$
3,328

 
$
3,239