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ACQUISITIONS AND INVESTMENTS - Luxx Lighting (Details) - USD ($)
shares in Millions, $ in Millions
Dec. 30, 2021
Jan. 01, 2022
Sep. 30, 2021
Jan. 02, 2021
Business Acquisition [Line Items]        
Goodwill   $ 681.5 $ 605.2 $ 548.9
Hawthorne | Luxx Lighting, Inc.        
Business Acquisition [Line Items]        
Consideration for the acquisition $ 213.5      
Number of shares issued in acquisition 0.1      
Fair value of shares issued in acquisition $ 21.0      
Inventory and accounts receivable acquired 31.5      
Noncurrent assets acquired 0.6      
Liabilities 4.3      
Finite-lived intangible assets acquired 106.9      
Goodwill $ 75.0      
Hawthorne | Luxx Lighting, Inc. | Minimum        
Business Acquisition [Line Items]        
Intangible assets amortization period 5 years      
Hawthorne | Luxx Lighting, Inc. | Maximum        
Business Acquisition [Line Items]        
Intangible assets amortization period 25 years