Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2025	Aug. 31, 2024	May 31, 2025
Segment Reporting Information
Revenue	$ 2,718,122	$ 2,501,587
Cost of sales	1,351,561	1,249,456
Gross margin	1,366,561	1,252,131
Selling and administrative expenses	748,702	691,100
Operating income	617,859	561,031
Depreciation and amortization	125,937	120,392
Capital expenditures	101,957	92,921
Total assets	9,837,690	9,068,707	$ 9,825,241
Uniform Rental and Facility Services
Segment Reporting Information
Revenue	2,091,066	1,933,839
First Aid and Safety Services
Segment Reporting Information
Revenue	334,657	292,567
Operating Segments | Uniform Rental and Facility Services
Segment Reporting Information
Revenue	2,091,066	1,933,839
Cost of sales	1,052,553	981,163
Gross margin	1,038,513	952,676
Selling and administrative expenses	538,576	506,238
Operating income	499,937	446,438
Depreciation and amortization	100,047	92,690
Capital expenditures	70,475	67,687
Total assets	8,100,857	7,588,895
Operating Segments | First Aid and Safety Services
Segment Reporting Information
Revenue	334,657	292,567
Cost of sales	144,489	123,764
Gross margin	190,168	168,803
Selling and administrative expenses	109,841	97,515
Operating income	80,327	71,288
Depreciation and amortization	19,749	22,305
Capital expenditures	16,474	10,555
Total assets	825,053	756,833
Operating Segments | All Other
Segment Reporting Information
Revenue	292,399	275,181
Cost of sales	154,519	144,529
Gross margin	137,880	130,652
Selling and administrative expenses	100,285	87,347
Operating income	37,595	43,305
Depreciation and amortization	6,141	5,397
Capital expenditures	15,008	14,679
Total assets	773,637	621,606
Corporate
Segment Reporting Information
Revenue	0	0
Cost of sales	0	0
Gross margin	0	0
Selling and administrative expenses	0	0
Operating income	0	0
Depreciation and amortization	0	0
Capital expenditures	0	0
Total assets	$ 138,143	$ 101,373