BUSINESS SEGMENTS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 683,430	$ 768,179	$ 2,043,798	$ 2,139,545
United States
Disaggregation of Revenue [Line Items]
Revenue	577,427	632,333	1,701,120	1,709,364
Europe
Disaggregation of Revenue [Line Items]
Revenue	19,792	31,120	43,574	96,277
Canada
Disaggregation of Revenue [Line Items]
Revenue	29,531	35,275	104,978	114,823
Australia
Disaggregation of Revenue [Line Items]
Revenue	49,548	55,142	172,350	191,679
All other countries
Disaggregation of Revenue [Line Items]
Revenue	7,132	14,309	21,776	27,402
Consumer and Professional Products
Disaggregation of Revenue [Line Items]
Revenue	282,288	362,634	849,424	1,056,819
Consumer and Professional Products | United States
Disaggregation of Revenue [Line Items]
Revenue	195,132	248,068	561,184	677,714
Consumer and Professional Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	19,792	31,113	43,558	96,226
Consumer and Professional Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	12,955	19,592	57,641	73,249
Consumer and Professional Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	49,548	55,142	172,350	191,679
Consumer and Professional Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	4,861	8,719	14,691	17,951
Consumer and Professional Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	107,276	139,126	292,385	292,516
Consumer and Professional Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	12,600	11,387	36,785	33,733
Consumer and Professional Products | Retail
Disaggregation of Revenue [Line Items]
Revenue	63,560	99,284	229,960	382,202
Consumer and Professional Products | Industrial
Disaggregation of Revenue [Line Items]
Revenue	22,204	24,748	58,380	57,122
Consumer and Professional Products | International excluding North America
Disaggregation of Revenue [Line Items]
Revenue	76,648	88,089	231,914	291,246
Home and Building Products
Disaggregation of Revenue [Line Items]
Revenue	401,142	405,545	1,194,374	1,082,726
Home and Building Products | United States
Disaggregation of Revenue [Line Items]
Revenue	382,295	384,265	1,139,936	1,031,650
Home and Building Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	0	7	16	51
Home and Building Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	16,576	15,683	47,337	41,574
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	2,271	5,590	7,085	9,451
Home and Building Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	186,554	194,526	562,433	511,988
Home and Building Products | Commercial
Disaggregation of Revenue [Line Items]
Revenue	179,054	167,173	524,811	455,338
Home and Building Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	$ 35,534	$ 43,846	$ 107,130	$ 115,400