Stock-Based Compensation (Detail) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Stock-Based Compensation
Stock-based compensation expense	$ 560,000,000	$ 500,000,000	$ 635,000,000
Income tax benefit	(179,000,000)	(158,000,000)	(197,000,000)
Stock-based compensation expense, net of tax	381,000,000	342,000,000	438,000,000
Cash received from option exercises and purchases under the ESPP	297,000,000	288,000,000	716,000,000
Benefit realized for the tax deduction from option exercises of share-based payment awards	51,000,000	13,000,000	57,000,000
Restricted Stock Awards
Shares
Outstanding at the beginning of the period (in shares)	32,262	25,532	16,813
Granted (in shares)	26,036	20,707	20,316
Vested (in shares)	(14,253)	(10,966)	(8,521)
Forfeited (in shares)	(3,237)	(3,011)	(3,076)
Outstanding at the end of the period (in shares)	40,808	32,262	25,532
Weighted-Average Grant Date Fair Value Per Share
Outstanding at the beginning of the period (in dollars per share)	$ 21	$ 31	$ 39
Granted (in dollars per share)	$ 28	$ 15	$ 27
Vested (in dollars per share)	$ 24	$ 33	$ 38
Forfeited (in dollars per share)	$ 22	$ 24	$ 34
Outstanding at the end of the period (in dollars per share)	$ 24	$ 21	$ 31
Total grant date fair value of restricted stock vested	234,000,000	247,000,000	229,000,000
Unrecognized pre-tax stock-based compensation expense and recognition period
Unrecognized pre-tax stock-based compensation expense	511,000,000
Remaining weighted-average vesting period over which pre-tax stock-based compensation expense is expected to be recognized	1 year 4 months 24 days
Stock Options
Unrecognized pre-tax stock-based compensation expense and recognition period
Unrecognized pre-tax stock-based compensation expense	61,000,000
Remaining weighted-average vesting period over which pre-tax stock-based compensation expense is expected to be recognized	2 years
Weighted-average fair value and the assumptions used to measure fair value
Weighted- average fair value of grants per option (in dollars per share)	$ 7	$ 4	$ 9
Expected volatility (as a percent)	33.10%	41.70%	41.90%
Risk-free interest rate (as a percent)	1.80%	1.10%	1.20%
Expected dividend yield (as a percent)	2.10%	3.60%	1.80%
Expected term in years	5 years 8 months 12 days	5 years 10 months 24 days	5 years 7 months 6 days
Total grant date fair value of options vested	53,000,000	64,000,000	104,000,000
Shares
Outstanding at beginning of period (in shares)	84,042	87,296	120,243
Granted (in shares)	9,575	25,785	7,529
Exercised (in shares)	(11,145)	(10,063)	(29,683)
Forfeited/cancelled/expired (in shares)	(24,619)	(18,976)	(10,793)
Outstanding at end of period (in shares)	57,853	84,042	87,296
Vested and expected to vest at end of period (in shares)	54,166	80,004	85,935
Exercisable at the end of period (in shares)	30,459	49,825	68,437
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 27	$ 29	$ 28
Granted (in dollars per share)	$ 28	$ 15	$ 27
Exercised (in dollars per share)	$ 18	$ 19	$ 20
Forfeited/cancelled/expired (in dollars per share)	$ 31	$ 25	$ 35
Outstanding at end of period (in dollars per share)	$ 27	$ 27	$ 29
Vested and expected to vest at the end of period (in dollars per share)	$ 27	$ 27	$ 29
Exercisable at the end of the period (in dollars per share)	$ 33	$ 33	$ 31
Weighted-Average Remaining Contractual Term
Outstanding at the end of the period	4 years 3 months 18 days	3 years 10 months 24 days	3 years
Vested and expected to vest at the end of the period	4 years 1 month 6 days	3 years 8 months 12 days	2 years 10 months 24 days
Exercisable at the end of the period	2 years 3 months 18 days	1 year 9 months 18 days	1 year 10 months 24 days
Aggregate Intrinsic Value
Outstanding at the end of the period	629,000,000	303,000,000	15,000,000
Vested and expected to vest at the end of the period	571,000,000	274,000,000	15,000,000
Exercisable at the end of the period	197,000,000	58,000,000	12,000,000
Options exercised	$ 151,000,000	$ 36,000,000	$ 176,000,000
Stock Options | Minimum
Stock-Based Compensation
Vesting period	3 years
Stock Options | Maximum
Stock-Based Compensation
Vesting period	4 years
Cash-settled awards and restricted stock awards | Minimum
Stock-Based Compensation
Vesting period	1 year
Cash-settled awards and restricted stock awards | Maximum
Stock-Based Compensation
Vesting period	3 years