Stockholders' Equity - Schedule of Changes in Restricted Stock Units (Detail)	12 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Schedule Of Restricted Stock Granted [Line Items]
Outstanding, beg. of year	12,325,499	13,399,381	12,731,430
Granted	1,045,000	375,000	2,315,000
Forfeited	(1,555,089)	(942,553)	(889,511)
Outstanding, end of year	8,829,618	12,325,499	13,399,381
Restricted Stock Unit [Member]
Schedule Of Restricted Stock Granted [Line Items]
Outstanding, beg. of year	801,667	1,911,669	2,842,004
Granted	105,000	105,000	120,000
Vested	(685,000)	(1,155,002)	(1,050,335)
Forfeited	(26,667)	(60,000)
Outstanding, end of year	195,000	801,667	1,911,669