Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets, Net of Accumulated Amortization (Change in Goodwill) (Details)

v3.19.2
Goodwill and Intangible Assets, Net of Accumulated Amortization (Change in Goodwill) (Details) - USD ($)
$ in Millions
12 Months Ended
May 31, 2019
May 31, 2018
Goodwill and Intangible Assets, Net of Accumulated Amortization [Abstract]    
Goodwill Balance, beginning of fiscal year $ 814.0 [1] $ 657.1
Changes during the period:    
Goodwill acquired 972.1 162.6
Acquisition accounting adjustments 1.6
Currency translation adjustment (5.1) (5.7)
Goodwill Balance, end of fiscal year $ 1,782.6 $ 814.0 [1]
[1] Amounts have been adjusted to reflect the adoption of ASC Topic 606 and to provide further detail related to certain professional employer organization ("PEO") balances.