GOODWILL AND INTANGIBLE ASSETS, NET - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Jul. 02, 2022 |
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2020 |
|
| Goodwill [Line Items] | ||||
| Reallocation | $ 0.0 | |||
| Amortization expense | $ 37.1 | 30.9 | $ 32.5 | |
| Goodwill | $ 254.0 | 605.2 | 544.1 | |
| Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration] | Impairment, restructuring and other | |||
| Noncash impairment charge | $ 35.3 | |||
| Trade names | ||||
| Goodwill [Line Items] | ||||
| Impairment charge | $ 69.0 | |||
| Noncash impairment charge | 22.5 | |||
| Customer relationships | ||||
| Goodwill [Line Items] | ||||
| Impairment charge | 41.0 | |||
| Noncash impairment charge | 12.8 | |||
| Hawthorne | ||||
| Goodwill [Line Items] | ||||
| Reallocation | (15.8) | (15.8) | ||
| Goodwill | 0.0 | 350.2 | 305.5 | |
| Hawthorne | Goodwill Impairment | ||||
| Goodwill [Line Items] | ||||
| Restructuring costs | $ 522.4 | 522.4 | ||
| U.S. Consumer | ||||
| Goodwill [Line Items] | ||||
| Reallocation | 15.8 | 15.8 | ||
| Goodwill | $ 243.9 | $ 243.9 | $ 228.1 | |
| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Indicates line item in statement of income or comprehensive income that includes impairment of finite-lived intangible asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|