Stock-Based Compensation (Detail 2) - Stock Options shares in Thousands	12 Months Ended
	Oct. 31, 2017 $ / shares shares
Information about options outstanding, by exercise price range
Options Outstanding - Shares Outstanding (shares) | shares	49,274
Weighted- Average Remaining Contractual Term	4 years 7 months 6 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 10
Options Exercisable - Shares Exercisable (shares) | shares	24,736
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 9
$0-$9.99
Information about options outstanding, by exercise price range
Exercise price range, lower range limit (in dollars per share)	0
Exercise price range, upper range limit (in dollars per share)	$ 9.99
Options Outstanding - Shares Outstanding (shares) | shares	33,168
Weighted- Average Remaining Contractual Term	4 years 4 months 12 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 8
Options Exercisable - Shares Exercisable (shares) | shares	19,198
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 8
$10-$19.99
Information about options outstanding, by exercise price range
Exercise price range, lower range limit (in dollars per share)	10
Exercise price range, upper range limit (in dollars per share)	$ 19.99
Options Outstanding - Shares Outstanding (shares) | shares	16,024
Weighted- Average Remaining Contractual Term	5 years 1 month 6 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 13
Options Exercisable - Shares Exercisable (shares) | shares	5,456
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 13
$20-$29.99
Information about options outstanding, by exercise price range
Exercise price range, lower range limit (in dollars per share)	20
Exercise price range, upper range limit (in dollars per share)	$ 29.99
Options Outstanding - Shares Outstanding (shares) | shares	82
Weighted- Average Remaining Contractual Term	2 years 2 months 1 day
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 25
Options Exercisable - Shares Exercisable (shares) | shares	82
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 25