Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Goodwill and Intangible Assets, Net of Accumulated Amortization (Components of Intangible Assets, at Cost) (Details) - USD ($)
$ in Millions
Feb. 28, 2019
May 31, 2018
Intangible Assets [Line Items]    
Total intangible assets, gross $ 632.1 $ 321.8
Less: Accumulated amortization 211.2 180.4
Intangible assets, net of accumulated amortization 420.9 141.4 [1]
Other Intangible Assets [Member]    
Intangible Assets [Line Items]    
Total intangible assets, gross [2] 23.4 13.3
Client Lists [Member]    
Intangible Assets [Line Items]    
Total intangible assets, gross [2] $ 608.7 $ 308.5
[1] Amounts have been adjusted to reflect the adoption of ASC Topic 606.
[2] Client lists and other intangible assets include current estimates of amounts acquired from Oasis as of December 20, 2018. Refer to Note D for further details.