Revenue Recognition - Disaggregated Revenues (Details) - USD ($) $ in Millions	12 Months Ended
Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 4,641.8	$ 4,345.6	$ 3,841.0
Operating Segments \| ABL
Disaggregation of Revenue [Line Items]
Net sales	3,576.4	3,612.2	3,573.4
Operating Segments \| AIS
Disaggregation of Revenue [Line Items]
Net sales	1,106.6	764.3	291.9
Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(41.2)	(30.9)	(24.3)
Independent sales network \| Operating Segments \| ABL
Disaggregation of Revenue [Line Items]
Net sales	2,702.7	2,646.8	2,551.7
Direct sales network \| Operating Segments \| ABL
Disaggregation of Revenue [Line Items]
Net sales	314.2	411.4	397.0
Retail sales \| Operating Segments \| ABL
Disaggregation of Revenue [Line Items]
Net sales	169.2	170.7	190.3
Corporate accounts \| Operating Segments \| ABL
Disaggregation of Revenue [Line Items]
Net sales	182.1	156.7	205.9
OEM and other \| Operating Segments \| ABL
Disaggregation of Revenue [Line Items]
Net sales	$ 208.2	$ 226.6	$ 228.5

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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