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Revenue Recognition - Disaggregated Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2022
Disaggregation of Revenue [Line Items]
Net sales	$ 3,841.0	$ 3,952.2	$ 4,006.1
Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	3,573.4	3,722.8	3,810.1
Operating Segments | ISG
Disaggregation of Revenue [Line Items]
Net sales	291.9	252.7	216.1
Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(24.3)	(23.3)	(20.1)
Independent sales network | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	2,551.7	2,671.0	2,714.1
Direct sales network | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	397.0	414.4	384.2
Retail sales | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	190.3	194.9	178.3
Corporate accounts | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	205.9	200.3	222.7
OEM and other | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	$ 228.5	$ 242.2	$ 310.8

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