BUSINESS SEGMENTS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 710,984	$ 779,617	$ 1,360,368	$ 1,371,366
United States
Disaggregation of Revenue [Line Items]
Revenue	590,726	617,556	1,123,693	1,077,031
Europe
Disaggregation of Revenue [Line Items]
Revenue	19,070	46,790	23,782	65,157
Canada
Disaggregation of Revenue [Line Items]
Revenue	36,976	44,907	75,447	79,548
Australia
Disaggregation of Revenue [Line Items]
Revenue	56,585	62,188	122,802	136,537
All other countries
Disaggregation of Revenue [Line Items]
Revenue	7,627	8,176	14,644	13,093
Consumer and Professional Products
Disaggregation of Revenue [Line Items]
Revenue	314,325	411,012	567,136	694,185
Consumer and Professional Products | United States
Disaggregation of Revenue [Line Items]
Revenue	212,385	264,747	366,052	429,646
Consumer and Professional Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	19,070	46,783	23,766	65,113
Consumer and Professional Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	21,570	31,029	44,686	53,657
Consumer and Professional Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	56,585	62,188	122,802	136,537
Consumer and Professional Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	4,715	6,265	9,830	9,232
Consumer and Professional Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	103,403	114,631	185,109	153,390
Consumer and Professional Products | Retail
Disaggregation of Revenue [Line Items]
Revenue	97,903	152,683	166,400	282,918
Consumer and Professional Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	11,698	12,019	24,185	22,346
Consumer and Professional Products | Industrial
Disaggregation of Revenue [Line Items]
Revenue	19,083	21,068	36,176	32,374
Consumer and Professional Products | International excluding North America
Disaggregation of Revenue [Line Items]
Revenue	82,238	110,611	155,266	203,157
Home and Building Products
Disaggregation of Revenue [Line Items]
Revenue	396,659	368,605	793,232	677,181
Home and Building Products | United States
Disaggregation of Revenue [Line Items]
Revenue	378,341	352,809	757,641	647,385
Home and Building Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	0	7	16	44
Home and Building Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	15,406	13,878	30,761	25,891
Home and Building Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Home and Building Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	2,912	1,911	4,814	3,861
Home and Building Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	185,149	172,377	375,879	317,462
Home and Building Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	35,267	38,852	71,596	71,554
Home and Building Products | Commercial construction
Disaggregation of Revenue [Line Items]
Revenue	$ 176,243	$ 157,376	$ 345,757	$ 288,165