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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	May 31, 2023
Disaggregation of Revenue [Line Items]
Deferred commissions, current	$ 94.1		$ 92.5
Deferred commissions, noncurrent	255.1		$ 251.6
Amortization of deferred commissions	$ 24.4	$ 22.4
Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue	100.00%	100.00%
Uniform Rental and Facility Services, First Aid and Safety Services and Fire Protection Services \| Revenue \| Product Concentration Risk \| Route Servicing Fees
Disaggregation of Revenue [Line Items]
Percentage of revenue	95.00%
Uniform Direct Sales \| Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue	3.40%	3.80%
Uniform Direct Sales \| Revenue \| Product Concentration Risk \| Other
Disaggregation of Revenue [Line Items]
Percentage of revenue	5.00%