Treasury Stock (Tables)

3 Months Ended

Aug. 31, 2015

Stockholders' Equity Attributable to Parent [Abstract]

Tabular Disclosure of an Entity's Treasury Stock

The Board of Directors (the "Board") has authorized the Company to repurchase Common Stock, from time to time as conditions allow, on the open market or through negotiated private transactions. The table below represents the remaining Board authorization:

Board Authorization	Amount
September 2010	$	44.0		(a)
Additional authorization July 2015	50.0
Less repurchases made under the authorization as of September 2010	(34.1		)
Remaining Board authorization at August 31, 2015	$	59.9