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Changes In Accounting Principles (Schedule Of Retrospective Application Of New Accounting Guidance) (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
Accounting Principles [Line Items]           
Interest Expense        $ 242$ 347$ 327
Income (Loss) from Continuing Operations before Income Taxes        1,0741,203(543)
Income Tax Expense        3414387
Income (Loss) from Continuing Operations        733765(550)
Net Income (Loss)95188156294208242156159733765(551)
Less: Net Loss Attributable to Noncontrolling Interest        (17)(15)(4)
Net Income (Loss) Attributable to Tyson97196159298213248159160750780(547)
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] | Previously Reported [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic          $ (1.47)
Net Income Per Share Attributable to Tyson - Basic          $ (1.47)
Common Class B [Member] | Previously Reported [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic          $ (1.32)
Net Income Per Share Attributable to Tyson - Basic          $ (1.32)
Previously Reported [Member]
           
Accounting Principles [Line Items]           
Interest Expense          310
Income (Loss) from Continuing Operations before Income Taxes          (526)
Income Tax Expense          14
Income (Loss) from Continuing Operations          (540)
Minority Interest          (4)
Net Income (Loss)          (537)
Less: Net Loss Attributable to Noncontrolling Interest          0
Net Income (Loss) Attributable to Tyson          0
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Diluted          $ (1.44)
Net Income (Loss) Per Share Attributable to Tyson - Diluted          $ (1.44)
Common Class A [Member] | Adjustments: Convertible Debt [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic          $ (0.02)
Net Income Per Share Attributable to Tyson - Basic          $ (0.02)
Common Class B [Member] | Adjustments: Convertible Debt [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic          $ (0.03)
Net Income Per Share Attributable to Tyson - Basic          $ (0.03)
Adjustments: Convertible Debt [Member]
           
Accounting Principles [Line Items]           
Interest Expense          17
Income (Loss) from Continuing Operations before Income Taxes          (17)
Income Tax Expense          (7)
Income (Loss) from Continuing Operations          (10)
Minority Interest          0
Net Income (Loss)          (10)
Less: Net Loss Attributable to Noncontrolling Interest          0
Net Income (Loss) Attributable to Tyson          0
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Diluted          $ (0.03)
Net Income (Loss) Per Share Attributable to Tyson - Diluted          $ (0.03)
Common Class A [Member] | Adjustments: Noncontrolling Interest [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic          $ 0.00
Net Income Per Share Attributable to Tyson - Basic          $ 0.00
Common Class B [Member] | Adjustments: Noncontrolling Interest [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic          $ 0.00
Net Income Per Share Attributable to Tyson - Basic          $ 0.00
Adjustments: Noncontrolling Interest [Member]
           
Accounting Principles [Line Items]           
Interest Expense          0
Income (Loss) from Continuing Operations before Income Taxes          0
Income Tax Expense          0
Income (Loss) from Continuing Operations          0
Minority Interest          4
Net Income (Loss)          (4)
Less: Net Loss Attributable to Noncontrolling Interest          (4)
Net Income (Loss) Attributable to Tyson          0
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Diluted          $ 0.00
Net Income (Loss) Per Share Attributable to Tyson - Diluted          $ 0.00
Common Class A [Member] | As Adjusted [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic          $ (1.49)
Net Income Per Share Attributable to Tyson - Basic          $ (1.49)
Common Class B [Member] | As Adjusted [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic          $ (1.35)
Net Income Per Share Attributable to Tyson - Basic          $ (1.35)
As Adjusted [Member]
           
Accounting Principles [Line Items]           
Interest Expense          327
Income (Loss) from Continuing Operations before Income Taxes          (543)
Income Tax Expense          7
Income (Loss) from Continuing Operations          (550)
Minority Interest          0
Net Income (Loss)          (551)
Less: Net Loss Attributable to Noncontrolling Interest          (4)
Net Income (Loss) Attributable to Tyson          $ (547)
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Diluted          $ (1.47)
Net Income (Loss) Per Share Attributable to Tyson - Diluted          $ (1.47)
Common Class A [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic        $ 2.04$ 2.13$ (1.49)
Net Income 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)
Common Class B [Member]
           
Accounting Principles [Line Items]           
Net Income (Loss) Per Share from Continuing Operations Attributable to Tyson - Basic        $ 1.84$ 1.91$ (1.35)
Net Income 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)