ACQUISITIONS AND INVESTMENTS - Rhizoflora (Details) - USD ($) $ in Millions |
12 Months Ended | |||
---|---|---|---|---|
Aug. 13, 2021 |
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2020 |
|
Business Acquisition [Line Items] | ||||
Goodwill | $ 254.0 | $ 605.2 | $ 544.1 | |
Minimum | ||||
Business Acquisition [Line Items] | ||||
Intangible assets amortization period | 3 years | |||
Maximum | ||||
Business Acquisition [Line Items] | ||||
Intangible assets amortization period | 25 years | |||
Hawthorne | ||||
Business Acquisition [Line Items] | ||||
Goodwill | $ 0.0 | $ 350.2 | $ 305.5 | |
Hawthorne | Rhizoflora, Inc. | ||||
Business Acquisition [Line Items] | ||||
Total consideration transferred | $ 33.7 | |||
Inventory acquired | 0.6 | |||
Finite-lived intangible assets acquired | 10.9 | |||
Goodwill | $ 22.2 | |||
Hawthorne | Rhizoflora, Inc. | Minimum | ||||
Business Acquisition [Line Items] | ||||
Intangible assets amortization period | 5 years | |||
Hawthorne | Rhizoflora, Inc. | Maximum | ||||
Business Acquisition [Line Items] | ||||
Intangible assets amortization period | 25 years |