Fair Value Measurements, Derivative Instruments and Hedging Activities - Additional Information (Detail)	3 Months Ended		9 Months Ended				1 Months Ended
	Aug. 31, 2012 USD ($)	Aug. 31, 2011 USD ($)	Aug. 31, 2012 USD ($)	Aug. 31, 2011 USD ($)	Nov. 30, 2011 USD ($)	Aug. 31, 2012 Minimum USD ($)	Jul. 31, 2012 Cash Flow Hedging	Jul. 31, 2012 Cash Flow Hedging	Jun. 30, 2012 Cash Flow Hedging	Jul. 31, 2012 Cash Flow Hedging Minimum USD ($)	Jun. 30, 2012 Cash Flow Hedging Minimum USD ($)	Jul. 31, 2012 Cash Flow Hedging Maximum USD ($)	Jun. 30, 2012 Cash Flow Hedging Maximum USD ($)	Nov. 30, 2011 Foreign Currency Third-Party Debt And Intercompany Payable USD ($)	Aug. 31, 2012 Foreign Currency Intercompany Payable USD ($)
Fair Value, Measurement Inputs, Disclosure [Line Items]
Derivative asset, cash collateral netting threshold, fair value						$ 100,000,000
Designated debt and other obligations as non-derivative hedges of net investments in foreign operations														3,600,000,000	2,000,000,000
Cumulative foreign currency transaction gains and (losses) included in the cumulative translation adjustment component of AOCI	274,000,000		274,000,000		204,000,000
Foreign currency translation adjustment	2,000,000	(23,000,000)	69,000,000	(242,000,000)
Maturity period for foreign currency options							2015-02	2015-02	2013-05
Weighted-average ceiling rate							0.83	0.83	1.30
Currency exchange risk hedged										269,000,000	512,000,000	290,000,000	560,000,000
Weighted-average floor rate							0.77	0.77	1.19
Foreign currency contract commitments	$ 1,000,000,000		$ 1,000,000,000
Percentage of debt bore fixed interest rates, including the effect of interest rate swaps	62.00%		62.00%		65.00%
Percentage of debt bore floating interest rates, including the effect of interest rate swaps	38.00%		38.00%		35.00%