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Government Subsidies (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2021
Aug. 31, 2020
May 31, 2022
May 31, 2021
Amounts paid, Deferred payroll taxes, CARES Act $ 6.2      
Funding received from Cares Act Payroll Support Program   $ 57.2    
Grant proceeds to be used for payment of employee wages, salaries and benefits under the CARES Act   48.5    
Employment subsidies from foreign governments     $ 4.9 $ 7.9
Accrued Liabilities.        
Deferred payroll taxes, CARES Act     6.2  
Covid-19 | Payroll Support Program Promissory Note        
Promissory note proceeds   $ 8.7    
Term of debt   10 years    
Covid-19 | Payroll Support Program Promissory Note | First five years        
Interest rate (as a percent)   1.00%    
Covid-19 | Payroll Support Program Promissory Note | Six to ten years        
Interest rate (as a percent)   2.00%    
Covid-19 | Payroll Support Program Promissory Note | First five years, interest in kind        
Interest rate (as a percent)   3.00%    
Covid-19 | Payroll Support Program Promissory Note | Remaining term, interest in kind        
Interest rate (as a percent)   1.00%    
Covid-19 | Cost of sales        
Contra-expense recognized for grant received from the Payroll Support Program under the CARES Act     47.5  
Covid-19 | Selling, general and administrative expenses        
Contra-expense recognized for grant received from the Payroll Support Program under the CARES Act     $ 1.0