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Commitments and Contingencies (Details)
$ in Millions
6 Months Ended
Aug. 12, 2019
statement
Feb. 28, 2021
USD ($)
Feb. 29, 2020
USD ($)
Commitments and Contingencies Disclosure [Abstract]      
Standard warranty term   5 years  
Movement in Standard Product Warranty Accrual [Roll Forward]      
Beginning balance   $ 16.1 $ 11.5
Warranty and recall costs   10.1 12.5
Payments and other deductions   (11.0) (12.5)
Acquired warranty and recall liabilities   0.0 0.1
Ending balance   $ 15.2 $ 11.6
Securities Class Action      
Loss Contingencies [Line Items]      
Number of statements used as basis for dismissing claims | statement 42    
Total number of statements challenged in the Consolidated Complaint | statement 47    
Number of challenged statements allowed to proceed to discovery | statement 5