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v3.22.2.2

IMPAIRMENT, RESTRUCTURING AND OTHER - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jul. 02, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring reserves classified as long-term |  | $ 4.6 |  |
Impairment, restructuring and other charges |  | 853.2 | $ 29.0 | $ 16.8
Noncash impairment charge |  | $ 35.3 |  |
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Impairment, restructuring and other |  |
Employee Severance and Impairment Of Property, Plant, And Equipment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  | $ 65.2 |  |
Cost of Sales, Impairment, Restructuring and Other Charges |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Inventory Write-down |  | 120.9 |  |
Operating expenses |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Gains on sale of property, plant and equipment |  | (16.2) | 0.0 | 0.0
COVID-19 related costs |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  |  | 29.2 | 19.4
U.S. Consumer | Cost of Sales, Impairment, Restructuring and Other Charges |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  | 9.7 |  |
U.S. Consumer | Impairment, Restructuring, And Other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  | 11.9 |  |
U.S. Consumer | COVID-19 related costs | Cost of Sales, Impairment, Restructuring and Other Charges |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  |  | 21.2 | 12.4
U.S. Consumer | COVID-19 related costs | Restructuring, Settlement and Impairment Provisions |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  |  | 4.0 | 3.8
Hawthorne | Cost of Sales, Impairment, Restructuring and Other Charges |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  | 27.1 |  |
Hawthorne | Impairment, Restructuring, And Other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  | 8.1 |  |
Goodwill and intangible asset impairment |  | 632.4 |  |
Hawthorne | Goodwill Impairment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs | $ 522.4 | 522.4 |  |
Hawthorne | Finite-Lived Intangible Asset Impairment |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  | 110.0 |  |
Hawthorne | COVID-19 related costs | Cost of Sales, Impairment, Restructuring and Other Charges |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  |  | 3.2 | 2.6
Other | Impairment, Restructuring, And Other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  | 0.7 |  |
Other | COVID-19 related costs | Cost of Sales, Impairment, Restructuring and Other Charges |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  |  | 0.6 | 0.5
Other | COVID-19 related costs | Restructuring, Settlement and Impairment Provisions |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  |  | $ 0.2 | $ 0.1
Corporate Segment | Impairment, Restructuring, And Other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring costs |  | $ 7.7 |  |

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