Stock-Based Compensation (Detail 2) - Stock Options shares in Thousands	12 Months Ended
	Oct. 31, 2016 $ / shares shares
Information about options outstanding, by exercise price range
Options Outstanding - Shares Outstanding (shares) | shares	57,498
Weighted- Average Remaining Contractual Term	5 years 4 months 12 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 15
Options Exercisable - Shares Exercisable (shares) | shares	26,204
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 13
$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	7,321
Weighted- Average Remaining Contractual Term	3 years 8 months 12 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 8
Options Exercisable - Shares Exercisable (shares) | shares	8,905
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	39,881
Weighted- Average Remaining Contractual Term	5 years 8 months 12 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 15
Options Exercisable - Shares Exercisable (shares) | shares	13,289
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 14
$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	10,296
Weighted- Average Remaining Contractual Term	5 years 2 months 12 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 21
Options Exercisable - Shares Exercisable (shares) | shares	4,010
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 22