Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets, Net of Accumulated Amortization (Components of Intangible Assets, at Cost) (Details)

v3.19.3.a.u2
Goodwill and Intangible Assets, Net of Accumulated Amortization (Components of Intangible Assets, at Cost) (Details) - USD ($)
$ in Millions
Nov. 30, 2019
May 31, 2019
Intangible Assets [Line Items]    
Total intangible assets, gross $ 632.9 $ 631.2
Less: Accumulated amortization 273.2 232.1
Intangible assets, net of accumulated amortization 359.7 399.1
Other Intangible Assets [Member]    
Intangible Assets [Line Items]    
Total intangible assets, gross 23.2 23.0
Client Lists [Member]    
Intangible Assets [Line Items]    
Total intangible assets, gross $ 609.7 $ 608.2