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ACQUISITIONS AND INVESTMENTS - Rhizoflora (Details) - USD ($) $ in Millions	Aug. 13, 2021	Jul. 02, 2022	Sep. 30, 2021	Jul. 03, 2021
Business Acquisition [Line Items]
Goodwill		$ 254.7	$ 605.2	$ 547.1
Hawthorne
Business Acquisition [Line Items]
Goodwill		$ 0.0	$ 350.2
Rhizoflora, Inc. | Hawthorne
Business Acquisition [Line Items]
Consideration for the acquisition	$ 33.7
Inventory acquired	0.6
Finite-lived intangible assets acquired	10.9
Goodwill	$ 22.2
Rhizoflora, Inc. | Hawthorne | Minimum
Business Acquisition [Line Items]
Intangible assets amortization period	5 years
Rhizoflora, Inc. | Hawthorne | Maximum
Business Acquisition [Line Items]
Intangible assets amortization period	25 years

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