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ACQUISITIONS AND INVESTMENTS - AeroGrow (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 26, 2021	Nov. 11, 2020	Jan. 01, 2022	Sep. 30, 2021	Jan. 02, 2021
Business Acquisition [Line Items]
Noncontrolling interest, carrying value			$ 0.0	$ 0.0	$ 6.4
Difference between purchase price and carrying value recognized in Common shares and capital in excess of par	$ 13.4
Common shares stated value (USD per share)			$ 0.01	$ 0.01	$ 0.01
AeroGrow
Business Acquisition [Line Items]
Noncontrolling interest, carrying value	$ 6.7
SMG Growing Media, Inc. | AeroGrow
Business Acquisition [Line Items]
Equity ownership percentage	100.00%	80.50%
AeroGrow
Business Acquisition [Line Items]
Cash consideration per share (USD per share)		$ 3.00
Cash consideration		$ 20.1

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