CAPITAL STOCK AND STOCK-BASED AWARDS (Detail) - Schedule of stock option activity for the Class A Stock and Common Stock plans (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	May 31, 2012
Outstanding at May 31, 2011	5,404,866
Outstanding at May 31, 2011 (in Dollars per share)	$ 30.28
Granted	646,552
Granted (in Dollars per share)	$ 28.38
Exercised	(724,613)
Exercised (in Dollars per share)	$ 27.75
Expired	(335,040)
Expired (in Dollars per share)	$ 41.44
Cancellations and forfeitures	(43,690)
Cancellations and forfeitures (in Dollars per share)	$ 26.31
Outstanding at May 31, 2012	4,948,075
Outstanding at May 31, 2012 (in Dollars per share)	$ 29.69
Outstanding at May 31, 2012	5 years 73 days
Outstanding at May 31, 2012 (in Dollars)	$ 5.1
Exercisable at May 31, 2012	3,497,113
Exercisable at May 31, 2012 (in Dollars per share)	$ 31.30
Exercisable at May 31, 2012	4 years
Exercisable at May 31, 2012 (in Dollars)	$ 2.2