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
	Feb. 28, 2013	Feb. 29, 2012
Net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	$ (3)	$ 1
Foreign currency zero cost collars
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	13
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Effective portions of derivatives qualifying and designated as hedging instruments recognized in other comprehensive income	$ 2	$ (7)