Financial Instruments Assets and Liabilities Measured on Recurring Basis (Footnotes) (Detail) - USD ($) $ in Millions	Jun. 28, 2015	Dec. 31, 2014
Fair Value, Measurements, Recurring [Member]
Footnotes to selected financial assets and liabilities:
Trading equity funds	$ 90
Trading debt funds	120
Trading securities held in trust	86	$ 105
Not Designated as Hedging Instrument [Member] \| Foreign Currency Swap [Member] \| Fair Value, Measurements, Recurring [Member]
Footnotes to selected financial assets and liabilities:
Instruments used as offsets (liabilities)	208	121
Not Designated as Hedging Instrument [Member] \| Foreign Currency Forward-Exchange Contracts [Member] \| Fair Value, Measurements, Recurring [Member]
Footnotes to selected financial assets and liabilities:
Instruments used as offsets (assets)	76	159
Instruments used as offsets (liabilities)	$ 95	54
Designated as Hedging Instrument [Member] \| Foreign Currency Long Term Debt [Member] \| Estimate of Fair Value Measurement [Member]
Footnotes to selected financial assets and liabilities:
Fair value of long-term debt		560
Maximum [Member] \| Fair Value, Measurements, Recurring [Member]
Footnotes to selected financial assets and liabilities:
Percentage of financial assets and liabilities measured at fair value inputs Level 1 and Level 3 inputs	1.00%
Level 2 [Member] \| Estimate of Fair Value Measurement [Member]
Footnotes to selected financial assets and liabilities:
Fair value of long-term debt	$ 30,800	$ 36,600
Foreign Currency Short Term Borrowings [Member] \| Designated as Hedging Instrument [Member] \| Estimate of Fair Value Measurement [Member]
Footnotes to selected financial assets and liabilities:
Fair value of short-term debt	$ 536

Financial Assets And Liabilities Measured At Fair Value, Percentage

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Footnotes to selected financial assets and liabilities [Abstract]

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date.

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- Definition

Amount of investments in debt securities classified as trading.

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- Definition

Fair value of investments in trading equity securities and other forms of trading securities that provide ownership interests.

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Total of all securities that are purchased with the intent to be sold in the short-term and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral.

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