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Revenue Recognition - Narrative (Details) - USD ($)
$ in Millions
Aug. 31, 2021
Aug. 31, 2020
Disaggregation of Revenue [Line Items]    
Right of return assets $ 6.4 $ 10.3
Customers with Rights of Return, Cash Discounts and Other Credits    
Disaggregation of Revenue [Line Items]    
Refund liabilities 28.1 31.0
Customers with Rebate, Marketing, and Trade Promotion Programs    
Disaggregation of Revenue [Line Items]    
Refund liabilities $ 33.9 $ 27.7