Basic and Diluted Earnings Per Share Computation (Detail) (USD $) In Millions, except Per Share data	3 Months Ended	9 Months Ended
Aug. 31, 2011	Aug. 31, 2010	Aug. 31, 2011	Aug. 31, 2010
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income	$ 1,337	$ 1,303	$ 1,695	$ 1,730
Interest on dilutive convertible notes		3		9
Net income for diluted earnings per share	$ 1,337	$ 1,306	$ 1,695	$ 1,739
Weighted-average common and ordinary shares outstanding	790	789	791	788
Dilutive effect of convertible notes		15		15
Dilutive effect of equity plans	2	2	2	3
Diluted weighted-average shares outstanding	792	806	793	806
Basic earnings per share	$ 1.69	$ 1.65	$ 2.14	$ 2.20
Diluted earnings per share	$ 1.69	$ 1.62	$ 2.14	$ 2.16
Stock Option
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Anti-dilutive stock options excluded from diluted earnings per share computations	9	11	9	10

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