STOCKHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Nov. 30, 2011	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009	Dec. 31, 2010	Jul. 31, 2009	May 31, 2008
STOCKHOLDERS' EQUITY
Number of shares authorized to be repurchased					3,000,000	5,000,000	4,000,000
Amount paid to repurchase the shares (in dollars)		$ 129,955	$ 135,777	$ 115,284
Repurchase of shares		2,296,380	2,678,474	3,316,536
Number of shares remained authorized for repurchase		2,032,858
Treasury shares held		24,429,125	22,637,278
Cost of treasury shares (in dollars)		$ 984,583	$ 876,620
Number of treasury shares authorized to be retired by the company's Board of Directors	15,000,000