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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2025	Feb. 29, 2024	Feb. 28, 2025	Feb. 29, 2024	May 31, 2024
Disaggregation of Revenue [Line Items]
Deferred commissions, current	$ 94.8		$ 94.8		$ 94.6
Deferred commissions, noncurrent	270.1		270.1		$ 262.5
Amortization of deferred commissions	$ 27.4	$ 25.6	$ 80.0	$ 75.3
Revenue \| Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue	100.00%	100.00%	100.00%	100.00%
Revenue \| Product Concentration Risk \| Uniform Direct Sales
Disaggregation of Revenue [Line Items]
Percentage of revenue	3.10%	3.50%	3.10%	3.50%
Route Servicing Fees \| Revenue \| Product Concentration Risk \| Uniform Rental and Facility Services, First Aid and Safety Services and Fire Protection Services
Disaggregation of Revenue [Line Items]
Percentage of revenue			95.00%
Other \| Revenue \| Product Concentration Risk \| Uniform Direct Sales
Disaggregation of Revenue [Line Items]
Percentage of revenue			5.00%