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v3.21.2

RELATED PARTIES - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
TSAs And Reverse TSAs |  |  |
Related Party Transaction [Line Items] |  |  |
Overall expected time period of transition | 12 months |  |
Net TSA (loss) income | $ (1,700,000) | $ (3,900,000) | $ 5,200,000
TSAs And Reverse TSAs | Energizer |  |  |
Related Party Transaction [Line Items] |  |  |
Related party, net receivable (payable) | (2,900,000) | 5,400,000 |
TSAs And Reverse TSAs | Varta |  |  |
Related Party Transaction [Line Items] |  |  |
Related party, net receivable (payable) | $ 1,700,000 | (1,000,000) |
H&G Supply Agreement | Energizer |  |  |
Related Party Transaction [Line Items] |  |  |
Supply agreement contract term | 24 months |  |
Net TSA (loss) income | $ 6,000,000 | 18,900,000 | $ 12,500,000
Net receivable from related party | $ 0 | $ 4,400,000 |
Minimum | TSAs And Reverse TSAs |  |  |
Related Party Transaction [Line Items] |  |  |
Overall expected time period of transition | 12 months |  |
Maximum | TSAs And Reverse TSAs |  |  |
Related Party Transaction [Line Items] |  |  |
Overall expected time period of transition | 24 months |  |

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