Derivatives Qualifying and Designated as Hedging Instruments Recognized in Other Comprehensive Income (Detail) (Designated as hedging instruments, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2012	Aug. 31, 2011
Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	$ (2)	$ 1	$ 53	$ (22)
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	(1)	(9)	(11)	(3)
Foreign currency options
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	$ 3		$ 3	$ 76