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ACQUISITIONS AND INVESTMENTS (Details) - USD ($) $ / shares in Units, $ in Millions				3 Months Ended
	Feb. 26, 2021	Dec. 31, 2020	Nov. 11, 2020	Apr. 03, 2021	Jan. 02, 2021	Sep. 30, 2020	Mar. 28, 2020
Schedule of Equity Method Investments [Line Items]
Payments to acquire equity interest		$ 100.7
Loans receivable, carrying value		66.4
Gain from change in fair value of loans receivable					$ 12.5
Loans receivable, fair value					$ 78.9
Investment, estimated fair value		$ 23.3
Investment in unconsolidated affiliates				$ 201.4		$ 0.0	$ 0.0
Noncontrolling interest, carrying value				0.0		$ 5.7	$ 4.9
Difference between purchase price and carrying value recognized in Common shares and capital in excess of par	$ 13.4			$ (20.1)
AeroGrow
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest, carrying value	$ 6.7
AeroGrow | SMG Growing Media, Inc.
Schedule of Equity Method Investments [Line Items]
Equity ownership percentage			80.50%
AeroGrow
Schedule of Equity Method Investments [Line Items]
Cash consideration per share (USD per share)			$ 3.00
Cash consideration			$ 20.1
Bonnie Plants
Schedule of Equity Method Investments [Line Items]
Equity ownership percentage		50.00%
Investment in unconsolidated affiliates		$ 202.9

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