Government Subsidies (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Aug. 31, 2020	May 31, 2023	May 31, 2022	May 31, 2021
Amounts paid, Deferred payroll taxes, CARES Act	$ 6.2	$ 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				$ 1.6	$ 4.9	$ 7.9
Cost of sales
Amount of contra-expense				2.4
Selling, general and administrative expenses
Amount of contra-expense				0.3
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