Stock-Based Compensation (Detail 2) - Stock Options shares in Thousands	12 Months Ended
	Oct. 31, 2018 $ / shares shares
Information about options outstanding, by exercise price range
Options Outstanding - Shares Outstanding (shares) | shares	18,263
Weighted- Average Remaining Contractual Term	4 years 2 months 12 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 10
Options Exercisable - Shares Exercisable (shares) | shares	14,896
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 10
$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	10,862
Weighted- Average Remaining Contractual Term	3 years 9 months 18 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 8
Options Exercisable - Shares Exercisable (shares) | shares	10,368
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	7,358
Weighted- Average Remaining Contractual Term	4 years 9 months 18 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 14
Options Exercisable - Shares Exercisable (shares) | shares	4,485
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	43
Weighted- Average Remaining Contractual Term	2 years 9 months 18 days
Options Outstanding - Weighted Average Exercise Price (in dollars per share)	$ 25
Options Exercisable - Shares Exercisable (shares) | shares	43
Options Exercisable - Weighted-Average Exercise Price (in dollars per share)	$ 25