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Business And Summary Of Significant Accounting Policies (Schedule Of Inventories Of Processed Products, Livestock, And Supplies Valued At Lower Of Cost Or Market) (Details) - USD ($)
$ in Millions
Sep. 30, 2017
Oct. 01, 2016
Inventory Disclosure [Abstract]    
Processed products $ 1,947 $ 1,530
Livestock 874 772
Supplies and other 418 430
Total inventory $ 3,239 $ 2,732