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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. 29, 2018
Sep. 30, 2017
Inventory Disclosure [Abstract]    
Processed products $ 1,981 $ 1,947
Livestock 1,006 874
Supplies and other 526 418
Total inventory $ 3,513 $ 3,239