BUSINESS SEGMENTS - Summary of Segment Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Continuing assets	$ 3,518,471	$ 2,327,242
Discontinued operations	3,691	4,029
Total Assets	3,787,023	2,604,685
Discontinued Operations, Not Held-for-sale
Segment Reporting Information [Line Items]
Discontinued operations	3,691	4,029
Discontinued Operations, Held-for-sale
Segment Reporting Information [Line Items]
Discontinued operations	264,861	273,414
Operating Segments
Segment Reporting Information [Line Items]
Continuing assets	3,380,009	2,044,040
Operating Segments | Consumer and Professional Products
Segment Reporting Information [Line Items]
Continuing assets	2,665,362	1,377,618
Operating Segments | Home and Building Products
Segment Reporting Information [Line Items]
Continuing assets	714,647	666,422
Corporate
Segment Reporting Information [Line Items]
Continuing assets	$ 138,462	$ 283,202