Treasury Stock

6 Months Ended

Nov. 30, 2011

Treasury Stock Disclosure [Text Block]

12. Treasury Stock

The Company has announced authorizations made by the Board of Directors to repurchase Common Stock, from time to time as conditions allow, on the open market or through negotiated private transactions, as summarized in the table below:

Authorization	Amount
December 2007	$	20.0
May 2008		20.0
November 2008		10.0
February 2009		5.0
December 2009		20.0
September 2010(a)		44.0
Subtotal	$	119.0
Less Repurchases made from December 2007 to November 2011		(80.1	)
Remaining Board Authorization at November 30, 2011	$	38.9

(a) Represents the remainder of $200.0 authorization after giving effect to the purchase of 5,199,699 shares at $30.00 per share pursuant to a modified Dutch auction tender offer that was completed by the Company on November 3, 2010, for a total cost of $156.0, excluding related fees and expenses. The Common shares purchased pursuant to the tender offer represented approximately 15.1% of the Common shares outstanding as of October 27, 2010. Fees for the modified Dutch auction tender offer were $1.2.

The repurchase program may be suspended at any time without prior notice.