Earnings per Share and Stock-Based Compensation - Schedule of Activity Related to Performance Based Equity Instruments (Detail)	3 Months Ended
	Jan. 31, 2014
Stockholders' Equity [Line Items]
Outstanding, October 31, 2013	8,829,618
Granted
Exercised	(568,290)
Canceled	(626,750)
Outstanding, January 31, 2014	7,634,578
Performance Options [Member]
Stockholders' Equity [Line Items]
Outstanding, October 31, 2013	688,000
Granted
Exercised	(12,000)
Canceled	(36,000)
Outstanding, January 31, 2014	640,000
Performance Restricted Stock Units [Member]
Stockholders' Equity [Line Items]
Outstanding, October 31, 2013	11,675,782
Granted
Exercised
Canceled	(30,937)
Outstanding, January 31, 2014	11,644,845