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REPORTABLE SEGMENTS - Schedule of disaggregated revenue by segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 2,270,626 | $ 2,066,546 | $ 1,874,248
Consumer and Professional Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 1,229,518 | 1,139,233 | 1,000,608
Home and Building Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 1,041,108 | 927,313 | 873,640
Residential Repair and Remodel | Consumer and Professional Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 185,896 | 173,859 | 140,369
Residential Repair and Remodel | Home and Building Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 516,995 | 467,112 | 439,287
Retail | Consumer and Professional Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 577,839 | 575,947 | 528,279
Residential New Construction | Consumer and Professional Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 50,437 | 59,907 | 58,709
Residential New Construction | Home and Building Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 116,528 | 105,285 | 99,014
Industrial | Consumer and Professional Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 43,411 | 40,285 | 45,129
International Excluding North America | Consumer and Professional Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | 371,935 | 289,235 | 228,122
Commercial Construction | Home and Building Products |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenue | $ 407,585 | $ 354,916 | $ 335,339

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