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Earnings (Loss) Per Share (Schedule Of Earnings Per Share, Basic And Diluted) (Details) (USD $)
In Millions, except Per Share data
3 Months Ended12 Months Ended
Oct. 01, 2011
Jul. 02, 2011
Apr. 02, 2011
Jan. 01, 2011
Oct. 02, 2010
Jul. 03, 2010
Apr. 03, 2010
Jan. 02, 2010
Oct. 01, 2011
Oct. 02, 2010
Oct. 03, 2009
Earnings Per Share, Basic and Diluted [Line Items]           
Income (loss) from continuing operations        $ 733$ 765$ (550)
Less: Net loss attributable to noncontrolling interest        (17)(15)(4)
Income (loss) from continuing operations attributable to Tyson        750780(546)
Undistributed earnings (losses)        691721(606)
Stock options and restricted stock        660
Convertible 2013 Notes        100
Denominator for diluted earnings (loss) per share - adjusted weighted average shares and assumed conversions        380379372
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Diluted        $ 1.97$ 2.06$ (1.47)
Net Income (Loss) Per Share Attributable to Tyson - Diluted$ 0.26$ 0.51$ 0.42$ 0.78$ 0.57$ 0.65$ 0.42$ 0.42$ 1.97$ 2.06$ (1.47)
Common Class A [Member]
           
Earnings Per Share, Basic and Diluted [Line Items]           
Dividends, common stock, cash        494950
Undistributed earnings (losses)        572597(501)
Weighted average number of shares outstanding - Basic        303303302
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic        $ 2.04$ 2.13$ (1.49)
Net Income (Loss) Per Share Attributable to Tyson - Basic$ 0.27$ 0.53$ 0.43$ 0.81$ 0.58$ 0.68$ 0.43$ 0.44$ 2.04$ 2.13$ (1.49)
Dividends, per share        $ 0.16$ 0.16$ 0.16
Common Class B [Member]
           
Earnings Per Share, Basic and Diluted [Line Items]           
Dividends, common stock, cash        101010
Undistributed earnings (losses)        $ 119$ 124$ (105)
Weighted average number of shares outstanding - Basic        707070
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic        $ 1.84$ 1.91$ (1.35)
Net Income (Loss) Per Share Attributable to Tyson - Basic$ 0.24$ 0.48$ 0.39$ 0.73$ 0.52$ 0.61$ 0.39$ 0.39$ 1.84$ 1.91$ (1.35)
Dividends, per share        $ 0.144$ 0.144$ 0.144