Business Segment Information - Sales by Product and Services (Details) - USD ($) $ in Millions	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
Net sales	$ 1,990.5	$ 1,820.0	$ 1,652.3
Aviation supply chain
Net sales	1,365.3	1,275.1	1,172.7
Maintenance, repair and overhaul services
Net sales	533.4	470.7	381.0
Mobility products
Net sales	$ 91.8	$ 74.2	$ 98.6