Borrowings (Detail) (USD $)	9 Months Ended
Oct. 01, 2011	Dec. 25, 2010
Debt Instrument [Line Items]
Board Of Directors Maximum Borrowing Capacity Authorization	$ 3,000,000,000
Maximum Borrowings Commercial Paper Program	1,400,000,000
2005 Junior Subordinated Convertible Debentures Due 2035 At 2.95% [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Dec. 15, 2035
Debt Instrument, Face Amount	1,600,000,000
Principal Amount Per Debenture Used In Conversion Rate	1,000
Conversion rate (shares of common stock per $1,000 principal amount of debentures)	32.94	32.52
Effective conversion price (per share of common stock)	$ 30.36	$ 30.75
Conversion Rate Adjustments, Quarterly Dividend Distributions Excess Per Share	$ 0.10
2009 Junior Subordinated Convertible Debentures Due 2039 At 3.25% [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Aug. 01, 2039
Debt Instrument, Face Amount	2,000,000,000
Principal Amount Per Debenture Used In Conversion Rate	1,000
Conversion rate (shares of common stock per $1,000 principal amount of debentures)	44.55	44.09
Effective conversion price (per share of common stock)	$ 22.45	$ 22.68
Conversion Rate Adjustments, Quarterly Dividend Distributions Excess Per Share	$ 0.14
2011 Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	5,000,000,000
Net debt carrying amount	4,982,000,000
2011 Senior Notes Due October 1, 2016 At 1.95% [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Oct. 01, 2016
Net debt carrying amount	1,498,000,000
Coupon interest rate	1.95%
2011 Senior Notes Due October 1, 2021 At 3.30% [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Oct. 01, 2021
Net debt carrying amount	1,995,000,000
Coupon interest rate	3.30%
2011 Senior Notes Due October 1, 2041 At 4.80% [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Oct. 01, 2041
Net debt carrying amount	$ 1,489,000,000
Coupon interest rate	4.80%

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Conversion Rate Adjustments Quarterly Dividend Distributions Excess Per Share

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Convertible Bond Conversion Rate Number Of Common Stock

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Maximum Borrowings Commercial Paper Program

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Principal Amount Per Debenture Used In Conversion Rate

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The price per share of the conversion feature embedded in the debt instrument.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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Interest rate stated in the contractual debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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