BUSINESS SEGMENTS - Summary of Segment Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Continuing assets	$ 3,501,122	$ 2,324,842
Discontinued operations	3,110	4,029
Total Assets	3,504,232	2,604,685
Discontinued Operations, Not Held-for-sale
Segment Reporting Information [Line Items]
Discontinued operations	3,110	4,029
Discontinued Operations, Held-for-sale
Segment Reporting Information [Line Items]
Discontinued operations	0	275,814
Operating Segments
Segment Reporting Information [Line Items]
Continuing assets	3,317,222	2,044,040
Operating Segments | Consumer and Professional Products
Segment Reporting Information [Line Items]
Continuing assets	2,575,836	1,377,618
Operating Segments | Home and Building Products
Segment Reporting Information [Line Items]
Continuing assets	741,386	666,422
Corporate
Segment Reporting Information [Line Items]
Continuing assets	$ 183,900	$ 280,802