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Revenue Recognition - Disaggregated Revenues (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	Aug. 31, 2023
Disaggregation of Revenue [Line Items]
Net sales	$ 4,345.6	$ 3,841.0	$ 3,952.2
Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	3,612.2	3,573.4	3,722.8
Operating Segments | AIS
Disaggregation of Revenue [Line Items]
Net sales	764.3	291.9	252.7
Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(30.9)	(24.3)	(23.3)
Independent sales network | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	2,646.8	2,551.7	2,671.0
Direct sales network | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	411.4	397.0	414.4
Retail sales | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	170.7	190.3	194.9
Corporate accounts | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	156.7	205.9	200.3
OEM and other | Operating Segments | ABL
Disaggregation of Revenue [Line Items]
Net sales	$ 226.6	$ 228.5	$ 242.2

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