Annual report pursuant to Section 13 and 15(d)

Funds Held for Clients and Corporate Investments (Classification of Investments on Consolidated Balance Sheets) (Details)

v3.20.2
Funds Held for Clients and Corporate Investments (Classification of Investments on Consolidated Balance Sheets) (Details) - USD ($)
$ in Millions
May 31, 2020
May 31, 2019
Funds Held for Clients and Corporate Investments [Abstract]    
Funds held for clients $ 3,430.5 $ 3,803.8
Corporate investments 27.2 39.0
Long-term corporate investments 10.2 10.2
Total funds held for clients and corporate investments, Fair value $ 3,467.9 $ 3,853.0