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IMPAIRMENT, RESTRUCTURING AND OTHER - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 33 Months Ended
--- | --- | --- | ---
Jun. 29, 2024 | Jul. 01, 2023 | Jun. 29, 2024 | Jul. 01, 2023 | Jun. 29, 2024
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring reserve, long-term | $ 7.3 |  | $ 7.3 |  | $ 7.3
Restructuring Initiative |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  | $ 34.5 |  | $ 185.8 |
Restructuring Initiative |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  | 69.7 |  |
U.S. Consumer |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  | 7.1 |  | 8.2 | 48.1
Hawthorne |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  |  |  | 288.3
Other |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  | 0.8 |  | 2.3
Corporate Segment |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  | 0.0 | 2.4 | 4.5 |
Corporate Segment | Restructuring Initiative |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  |  |  | $ 25.1
Cost of sales—impairment, restructuring and other | U.S. Consumer |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  | 3.7 |  |
Cost of sales—impairment, restructuring and other | Hawthorne |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  | 25.7 | 62.9 | 152.6 |
Impairment, Restructuring, And Other | U.S. Consumer |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  |  | (1.2) |  |
Impairment, Restructuring, And Other | Hawthorne |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring charges and adjustments |  | $ 1.9 | 1.0 | $ 20.1 |
Restructuring, Settlement And Impairment Provisions |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Gain (loss) on resolution of dispute | $ 0.0 |  | $ 12.1 |  |

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