Quarterly report [Sections 13 or 15(d)]

Funds Held for Clients and Corporate Investments (Realized Gains and Losses from Sale of Available-for-sale Securities) (Details)

v3.25.1
Funds Held for Clients and Corporate Investments (Realized Gains and Losses from Sale of Available-for-sale Securities) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Feb. 28, 2025
Feb. 29, 2024
Feb. 28, 2025
Feb. 29, 2024
Funds Held for Clients and Corporate Investments [Abstract]        
Gross realized gains $ 0.0 $ 0.0 $ 0.0 $ 0.0
Gross realized losses (0.4)   (0.4) 0.0
Net realized (losses)/gains $ (0.4) $ 0.0 $ (0.4) $ 0.0