Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	May 31, 2024
Segment Reporting Information
Revenue	$ 2,501,587	$ 2,342,330
Operating income	561,031	500,556
Total assets	9,068,707	8,719,681	$ 9,168,817
Uniform Rental and Facility Services
Segment Reporting Information
Revenue	1,933,839	1,826,825
First Aid and Safety Services
Segment Reporting Information
Revenue	292,567	260,693
Operating Segments | Uniform Rental and Facility Services
Segment Reporting Information
Revenue	1,933,839	1,826,825
Operating income	446,438	406,529
Total assets	7,588,895	7,346,364
Operating Segments | First Aid and Safety Services
Segment Reporting Information
Revenue	292,567	260,693
Operating income	71,288	59,580
Total assets	756,833	723,687
Operating Segments | All Other
Segment Reporting Information
Revenue	275,181	254,812
Operating income	43,305	34,447
Total assets	621,606	561,504
Corporate
Segment Reporting Information
Revenue	0	0
Operating income	0	0
Total assets	$ 101,373	$ 88,126