Treasury Stock (Tables)

6 Months Ended

Nov. 30, 2019

Stockholders' Equity Attributable to Parent [Abstract]

Tabular Disclosure of an Entity's Treasury Stock

The table below represents the Board authorizations at the dates indicated:

Authorizations	Amount
July 2015	$50.0
March 2018	50.0
Total current Board authorizations at June 1, 2019	$100.0
Less repurchases made under these authorizations	(66.8)
Remaining Board authorization at November 30, 2019	$33.2