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CONTINGENCIES (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 | Mar. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2021
Loss Contingencies [Line Items] |  |  |  |  |  |
Accrued liabilities related to other regulatory matters which are accounted for in the Other liabilities |  |  |  |  |  | $ 3.6
Wild Bird Food |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Litigation settlement, amount awarded to other party | $ 20.0 | $ 42.5 |  |  |  |
Pre-tax charge recognized |  |  |  |  | $ 85.0 |
Favorable adjustment to previously disclosed legal matter |  |  |  | $ 22.5 |  |
Insurance recoveries |  |  | $ 1.5 | $ 13.4 |  |

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