BUSINESS SEGMENTS - Segment EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 108,560	$ 59,248
Segment adjusted EBITDA	122,336	72,511
Depreciation and amortization	(17,113)	(13,081)
Gain on sale of building	10,852	0
Income before taxes from continuing operations	68,020	23,917
Operating Segments
Segment Reporting Information [Line Items]
Depreciation and amortization	(16,973)	(12,944)
Operating Segments | Consumer and Professional Products
Segment Reporting Information [Line Items]
Adjusted EBITDA	(1,809)	16,214
Depreciation and amortization	(13,127)	(8,606)
Operating Segments | Home and Building Products
Segment Reporting Information [Line Items]
Adjusted EBITDA	124,145	56,297
Depreciation and amortization	(3,846)	(4,338)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Unallocated amounts, excluding depreciation	(13,776)	(13,263)
Net interest expense	(24,544)	(15,648)
Depreciation and amortization	(17,113)	(13,081)
Gain on sale of building	10,852	0
Strategic review - retention and other	8,232	0
Proxy expenses	(1,503)	(2,291)
Acquisition costs	0	(2,595)
Restructuring charges	$ 0	$ (1,716)