Basic and Diluted Earnings Per Share Computation (Detail) (USD $) In Millions, except Per Share data	3 Months Ended	6 Months Ended
May 31, 2011	May 31, 2010	May 31, 2011	May 31, 2010
Schedule of Earnings Per Share, Basic and Diluted, by Common Class [Line Items]
Net income	$ 206	$ 252	$ 358	$ 427
Interest on dilutive convertible notes		3		6
Net income for diluted earnings per share	$ 206	$ 255	$ 358	$ 433
Weighted-average common and ordinary shares outstanding	791	788	791	788
Dilutive effect of convertible notes		15		15
Dilutive effect of equity plans	2	3	2	3
Diluted weighted-average shares outstanding	793	806	793	806
Basic earnings per share	$ 0.26	$ 0.32	$ 0.45	$ 0.54
Diluted earnings per share	$ 0.26	$ 0.32	$ 0.45	$ 0.54
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	8.9	8.8	8.5	8.9

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