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Divestitures - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Mar. 29, 2020 | Apr. 04, 2021 | Mar. 29, 2020 | Apr. 04, 2021 | Mar. 29, 2020 | Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Loss on assets held for sale |  | $ 0.0 | $ (7.0) | $ 0.0 | $ 25.7 |
GBL |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Indemnifications, acquisition agreement |  | 36.1 |  | 36.1 |  | $ 51.6
GBL | Indemnification payable | Energizer |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Net settlement payable |  | 17.0 |  | 17.0 |  | 33.0
GBL | Other Long-Term Liabilities |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Net settlement payable |  | $ 19.1 |  | $ 19.1 |  | 18.6
Coevorden Operations |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Cash proceeds |  |  |  |  |  | 29.0
Goodwill |  |  |  |  |  | $ 10.6
Loss on assets held for sale |  |  |  |  | $ 25.7 |
Coevorden Operations | Maximum |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Period of lease and operate distribution center | 18 months |  |  |  |  |

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