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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 29, 2024	Feb. 28, 2023	Feb. 29, 2024	Feb. 28, 2023	May 31, 2023
Disaggregation of Revenue [Line Items]
Deferred commissions, current	$ 94.3		$ 94.3		$ 92.5
Deferred commissions, noncurrent	260.8		260.8		$ 251.6
Amortization of deferred commissions	$ 25.6	$ 24.0	$ 75.3	$ 69.8
Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue	100.00%	100.00%	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	3.50%	3.90%	3.50%	3.80%
Uniform Direct Sales \| Revenue \| Product Concentration Risk \| Other
Disaggregation of Revenue [Line Items]
Percentage of revenue			5.00%