Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Feb. 28, 2026	Feb. 28, 2025	May 31, 2025
Disaggregation of Revenue [Line Items]
Deferred commissions, current	$ 96.1		$ 96.1		$ 96.5
Deferred commissions, noncurrent	296.5		296.5		$ 275.3
Amortization of deferred commissions	$ 26.6	$ 27.4	$ 79.3	$ 80.0
Revenue | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	100.00%	100.00%	100.00%	100.00%
Revenue | Product Concentration Risk | Uniform Direct Sales
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	3.00%	3.20%	2.80%	3.10%
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 (as percent)			95.00%
Other | Revenue | Product Concentration Risk | Uniform Direct Sales
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)			5.00%