Annual report pursuant to Section 13 and 15(d)

Valuation and Qualifying Accounts (Details)

v3.19.2
Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
May 31, 2019
May 31, 2018
May 31, 2017
Allowance for Doubtful Accounts [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance as of beginning of fiscal year $ 7.0 $ 6.0 $ 4.2
Additions charged to expenses 3.3 3.6 4.9
Additions to/(deductions from) other accounts [1] 0.7
Costs and deductions [2] 3.5 2.6 3.1
Balance as of end of fiscal year 7.5 7.0 6.0
Reserve for Client Fund Losses [Member]      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance as of beginning of fiscal year 2.4 3.0 2.0
Additions charged to expenses 3.7 3.1 4.1
Additions to/(deductions from) other accounts [1]
Costs and deductions [2] 3.4 3.7 3.1
Balance as of end of fiscal year $ 2.7 $ 2.4 $ 3.0
[1] Amounts related to business acquisitions.
[2] Uncollectible amounts written off, net of recoveries.