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Transactions With Related Parties (Details) shares in Millions, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2017 USD ($) | Sep. 28, 2019 USD ($) shares | Sep. 29, 2018 USD ($) | Sep. 30, 2017 USD ($)
Donald J. Tyson Revocable Trust, Berry Street Waste Water Treatment Plant, LP, and the sisters of Mr. Tyson [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Amounts of Transaction |  | $ 1.0 |  |
Donald J. Tyson Revocable Trust, Berry Street Waste Water Treatment Plant, LP, and the sisters of Mr. Tyson [Member] | Water Plant [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Expenses from Transactions with Related Party |  | $ 1.0 | $ 1.0 | $ 1.0
Related Party Transaction, Number of Operating Leases |  | 2 |  |
Tyson Family Ownership Percentage |  | 90.00% |  |
Tyson Limited Partnership [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Amounts of Transaction |  | $ 0.3 |  |
Tyson Limited Partnership [Member] | Class B [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Tyson Family Ownership Percentage |  | 99.985% |  |
Related Party Ownership of Shares Outstanding | shares |  | 70.0 |  |
Tyson Limited Partnership And Tyson Family [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Voting Rights Percentage |  | 70.97% |  |
Tyson Limited Partnership And Tyson Family [Member] | Class A [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Tyson Family Ownership Percentage |  | 2.15% |  |
Related Party Ownership of Shares Outstanding | shares |  | 6.3 |  |
Donald Smith and John Randal Tyson [Member] | Buchan, Ltd [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 5.0 |  |  |
Equity Method Investment, Ownership Percentage | 17.50% |  |  |
Due from Joint Ventures, Current |  |  | $ 9.0 |

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