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ACQUISITIONS AND INVESTMENTS - AeroGrow (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 26, 2021	Nov. 11, 2020	Sep. 30, 2022	Sep. 30, 2021
Business Acquisition [Line Items]
Common shares, stated value per share (USD per share)			$ 0.01	$ 0.01
AeroGrow
Business Acquisition [Line Items]
Noncontrolling interest, carrying value	$ 6.7
Difference between purchase price and carrying value recognized in Common shares and capital in excess of par	$ 13.4
Common shares, stated value per share (USD per share)			$ 0.01	$ 0.01
SMG Growing Media, Inc. \| AeroGrow
Business Acquisition [Line Items]
Percent ownership	100.00%	80.50%
AeroGrow
Business Acquisition [Line Items]
Cash consideration per share (USD per share)		$ 3.00
Cash consideration		$ 20.1