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REPORTABLE SEGMENTS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2025 | Mar. 31, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ 611,746 | $ 672,880 | $ 1,244,117 | $ 1,316,033
United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 498,562 | 558,468 | 1,005,643 | 1,089,268
Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 12,533 | 18,354 | 17,073 | 23,707
Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 28,343 | 30,776 | 58,463 | 66,572
Australia |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 65,240 | 57,030 | 148,371 | 121,901
All other countries |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 7,068 | 8,252 | 14,567 | 14,585
Home and Building Products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 368,248 | 392,062 | 763,649 | 787,853
Home and Building Products | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 354,444 | 375,326 | 732,702 | 754,954
Home and Building Products | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 0 | 1 | 0 | 109
Home and Building Products | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 12,037 | 14,413 | 26,153 | 29,181
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 | 1,767 | 2,322 | 4,794 | 3,609
Home and Building Products | Residential repair and remodel |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 174,312 | 188,529 | 368,994 | 375,070
Home and Building Products | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 162,355 | 170,740 | 329,222 | 347,733
Home and Building Products | Residential new construction |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 31,581 | 32,793 | 65,433 | 65,050
Consumer and Professional Products |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 243,498 | 280,818 | 480,468 | 528,180
Consumer and Professional Products | United States |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 144,118 | 183,142 | 272,941 | 334,314
Consumer and Professional Products | Europe |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 12,533 | 18,353 | 17,073 | 23,598
Consumer and Professional Products | Canada |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 16,306 | 16,363 | 32,310 | 37,391
Consumer and Professional Products | Australia |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 65,240 | 57,030 | 148,371 | 121,901
Consumer and Professional Products | All other countries |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 5,301 | 5,930 | 9,773 | 10,976
Consumer and Professional Products | Residential repair and remodel |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 78,338 | 97,044 | 148,597 | 173,108
Consumer and Professional Products | Residential new construction |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 12,498 | 13,676 | 26,879 | 27,681
Consumer and Professional Products | Retail |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 52,518 | 73,511 | 99,781 | 142,789
Consumer and Professional Products | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | 17,562 | 16,372 | 31,416 | 31,149
Consumer and Professional Products | International excluding North America |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue | $ 82,582 | $ 80,215 | $ 173,795 | $ 153,453

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