Fair Value Measurements, Derivative Instruments and Hedging Activities - Additional Information (Detail)	3 Months Ended			3 Months Ended
	Feb. 28, 2014 USD ($)	Feb. 28, 2013 USD ($)	Nov. 30, 2013 USD ($)	Feb. 28, 2013 Foreign Currency Intercompany Payable USD ($)	Feb. 28, 2014 Minimum USD ($)	Jul. 31, 2012 Cash Flow Hedging [Member]	Jul. 31, 2012 Cash Flow Hedging [Member] Maximum USD ($)	Jul. 31, 2012 Cash Flow Hedging [Member] Minimum USD ($)
Fair Value, Measurement Inputs, Disclosure [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss	$ 153,000,000
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				2,200,000,000
Cumulative foreign currency transaction gains and (losses) included in the cumulative translation adjustment component of AOCI	194,000,000		234,000,000
Foreign currency translation adjustment	(40,000,000)	89,000,000
Derivative, Average Cap Price						0.83
Foreign Currency Cash Flow Hedge Asset at Fair Value							306,000,000	284,000,000
Weighted-average floor rate (GBP per Euro in July)						0.77
Foreign currency contract commitments	$ 1,300,000,000
Percentage of debt bore fixed interest rates, including the effect of interest rate swaps	62.00%		59.00%
Percentage of debt bore floating interest rates, including the effect of interest rate swaps	38.00%		41.00%