The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period.

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The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

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Aggregate notional amount of all foreign currency derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments.

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The carrying value as of the balance sheet date of the assets received as collateral against securities loaned to other broker-dealers. Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a liability.

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Financial Instruments - Narrative (Detail) (USD $)							3 Months Ended
Financial Instruments - Narrative (Detail) (USD $)	Apr. 01, 2012 Commercial Paper [Member]	Dec. 31, 2011 Commercial Paper [Member]	Apr. 01, 2012 Foreign Exchange Contract [Member]	Apr. 01, 2012 Foreign Exchange Contract [Member] United Kingdom [Member] Maturing in 2038 [Member]	Apr. 01, 2012 Interest Rate Contract [Member]	Apr. 01, 2012 Credit Risk Contract [Member]	Apr. 01, 2012 Derivative Instruments Issued By Counterparties [Member]
Short - Term Borrowings
Commercial paper outstanding	$ 2,700,000,000	$ 2,700,000,000
Derivative Financial Instruments and Hedging Activities
Aggregate notional amount of foreign exchange derivative financial instruments			46,800,000,000
Notional amount of foreign exchange derivative financial instruments				2,400,000,000
Aggregate notional amount of interest rate derivative financial instruments					12,300,000,000
Credit Risk Derivatives
Aggregate fair value of net derivative liabilities						287,000,000
Posted collateral						297,000,000
Additional collateral						111,000,000
Concentration risk maximum exposure							2,800,000,000
Securities received as collateral							$ 460,000,000