Stock Options and Restricted Stock Units Under all Equity Plans (Except Twenty Zero Five Directors Plan) (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2012		Oct. 31, 2011		Oct. 31, 2010		Oct. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted- Average Exercise Price per Share, Options Exercised	$ 21.09		$ 20.53		$ 18.16
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Available for Grant, Beginning Balance	5,911,000	[1]	2,606,000	[1]	6,703,000	[1]
Options Outstanding, Options Granted	1,719,000		2,270,000		1,995,000
Weighted Average Remaining Contractual Life, options outstanding	3 years 8 months 16 days		2 years 11 months 19 days		2 years 9 months 18 days		2 years 10 months 21 days
Available for Grant, Options Granted	(1,719,000)	[1]	(2,228,000)	[1]	(1,995,000)	[1]
Options Outstanding, Options Assumed	382,000	[2]			456,000	[2]
Weighted-Average Remaining Contractual Life , Vested and expected to vest	3 years 8 months 9 days
Available for Grant, Options Canceled/forfeited/expired	631,000	[1]	550,000	[1]	372,000	[1]
Options Outstanding, Options Exercised	(7,103,000)		(6,800,000)		(6,465,000)
Weighted-Average Remaining Contractual Life , Exercisable	2 years 7 months 10 days
Available for Grant, Restricted stock units granted	(2,638,000)	[1],[3]	(2,182,000)	[1],[3]	(2,677,000)	[1],[3]
Options Outstanding, Options Canceled/forfeited/expired	(739,000)		(694,000)		(620,000)
Available for Grant, Restricted stock units forfeited	167,000	[1],[3]	165,000	[1],[3]	203,000	[1],[3]
Available for Grant, Additional shares reserved	5,000,000	[1]	7,000,000	[1]
Available for Grants, Ending balance	7,352,000	[1]	5,911,000	[1]	2,606,000	[1]	6,703,000	[1]
Options Outstanding, Vested and expected to vest	10,135,000
Options Outstanding, Exercisable	6,337,000
Weighted- Average Exercise Price per Share, Beginning Balance	$ 22.76		$ 21.83		$ 21.22
Weighted- Average Exercise Price per Share, Options Granted	$ 28.86		$ 26.07		$ 21.30
Weighted- Average Exercise Price per Share, Options Assumed	$ 19.15	[2]			$ 18.10	[2]
Weighted- Average Exercise Price per Share, Options Exercised	$ 21.09		$ 20.53		$ 18.16
Weighted- Average Exercise Price per Share, Options Canceled/forfeited/expired	$ 25.07		$ 27.24		$ 23.19
Weighted- Average Exercise Price per Share, Ending Balance	$ 24.64		$ 22.76		$ 21.83		$ 21.22
Weighted- Average Exercise Price per Share, Vested and expected to vest	$ 24.62
Weighted- Average Exercise Price per Share, Exercisable	$ 23.87
Aggregate Intrinsic Value, Beginning Balance	$ 74,068		$ 90,013		$ 58,267
Aggregate Intrinsic Value, Ending Balance	80,950		74,068		90,013		58,267
Aggregate Intrinsic Value, Vested and expected to vest	80,526
Aggregate Intrinsic Value, Exercisable	$ 55,118
Stock Option | All Stock Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Ending Balance	10,219,000		15,960,000		21,184,000		25,818,000

[1] Excluding shares reserved for future issuance under the 2005 Directors Plan.

[2] The Company assumed options and stock appreciation rights (SARs) outstanding under various plans through acquisitions.

[3] These amounts do not reflect the actual number of restricted stock units granted or forfeited but rather the effect on the total remaining shares available for future grants after the application of the share reserve ratio. For more information about the share reserve ratio, please see Restricted Stock Units above.