Estimated Fair Value and Basis of Valuation of Financial Instrument Assets and (Liabilities) Measured at Fair Value on a Recurring Basis (Parenthetical) (Detail) (Financial Instruments Measured at Fair Value on a Recurring Basis, USD $) In Millions	May 31, 2011	Nov. 30, 2010
Ship Foreign Currency Options
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total foreign currency options designated as foreign currency cash flow hedges for euro-denominated shipbuilding contracts		$ 785
Maturity of foreign currency derivatives		May 2011
Net investment hedges
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total foreign currency forwards designated as hedges of net investments in foreign operations for euro-denominated functional currency	216	352
Maturity of foreign currency derivatives	July 2017
Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amount of interest rate swap agreements change, of fixed rate debt to U.S. dollar LIBOR or GBP LIBOR-based floating rate debt, for both U.S. dollar and sterling interest rate swaps designated as fair value hedges	530	512
Amount of interest rate swap agreements change, of EURIBOR-based floating rate debt to fixed rate debt, for euro interest rate swaps designated as cash flow hedges	$ 344	$ 333
Maturity of interest rate swaps	February 2022