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Revenue Recognition - Disaggregated Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Disaggregation of Revenue [Line Items]
Total sales	$ 1,060.6	$ 899.7	$ 2,895.8	$ 2,468.3
Operating segments | ABL
Disaggregation of Revenue [Line Items]
Total sales	1,008.4	850.0	2,755.1	2,340.4
Operating segments | ISG
Disaggregation of Revenue [Line Items]
Total sales	58.3	55.4	154.7	139.5
Eliminations
Disaggregation of Revenue [Line Items]
Total sales	(6.1)	(5.7)	(14.0)	(11.6)
Independent sales network | Operating segments | ABL
Disaggregation of Revenue [Line Items]
Total sales	725.9	628.0	1,977.0	1,737.4
Direct sales network | Operating segments | ABL
Disaggregation of Revenue [Line Items]
Total sales	96.1	96.7	269.3	256.0
Retail sales | Operating segments | ABL
Disaggregation of Revenue [Line Items]
Total sales	44.7	36.1	134.3	135.8
Corporate accounts | Operating segments | ABL
Disaggregation of Revenue [Line Items]
Total sales	59.1	44.0	149.7	93.1
Other | Operating segments | ABL
Disaggregation of Revenue [Line Items]
Total sales	$ 82.6	$ 45.2	$ 224.8	$ 118.1

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