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Earnings Per Share (Schedule Of Earnings Per Share, Basic And Diluted) (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Dec. 30, 2017
Dec. 31, 2016
Earnings Per Share, Basic and Diluted [Line Items]    
Net Income $ 1,632 $ 594
Less: Net Income Attributable to Noncontrolling Interests 1 1
Net income attributable to Tyson 1,631 593
Undistributed earnings $ 1,496 $ 488
Stock options, restricted stock and performance units 5 6
Denominator for diluted earnings per share – adjusted weighted average shares and assumed conversions 371 373
Diluted $ 4.40 $ 1.59
Class A [Member]    
Earnings Per Share, Basic and Diluted [Line Items]    
Less dividends declared: $ 111 $ 86
Undistributed earnings $ 1,233 $ 403
Weighted average number of shares outstanding - Basic 296 297
Net Income Per Share Attributable to Tyson - Basic $ 4.54 $ 1.64
Class B [Member]    
Earnings Per Share, Basic and Diluted [Line Items]    
Less dividends declared: $ 24 $ 19
Undistributed earnings $ 263 $ 85
Weighted average number of shares outstanding - Basic 70 70
Net Income Per Share Attributable to Tyson - Basic $ 4.09 $ 1.49