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Revenues - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Nov. 30, 2021
Nov. 30, 2020
Nov. 30, 2021
Nov. 30, 2020
May 31, 2021
Revenue from Contract with Customer [Abstract]          
Returns liability $ 50.7 $ 54.5 $ 50.7 $ 54.5 $ 45.2
Return asset 5.0 3.3 5.0 3.3 $ 3.4
Contract with Customer, Liability, Revenue Recognized $ 27.9 $ 24.2 $ 43.2 $ 41.1