Debt Long Term Debt by Currency (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 27, 2015	Dec. 28, 2014
Debt Instrument [Line Items]
Capital lease obligations (various)	$ 140
Total long-term debt	25,324	$ 13,400
Current portion of long-term debt	74
Total long-term debt, excluding current portion	$ 25,250	$ 13,358
U.S. Dollar Denominated Debt
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, Start	2016
Debt Instrument, Maturity Date Range, End	2045
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	1.50%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	7.125%
Long-term Debt	$ 22,807
Canadian Dollar Denominated Debt
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, Start	2018
Debt Instrument, Maturity Date Range, End	2020
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	1.787%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	2.70%
Long-term Debt	$ 748
Euro Denominated Debt
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, Start	2023
Debt Instrument, Maturity Date Range, End	2023
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	2.00%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	2.00%
Long-term Debt	$ 828
British Pound Sterling Denominated Debt
Debt Instrument [Line Items]
Debt Instrument, Maturity Date Range, Start	2027
Debt Instrument, Maturity Date Range, End	2030
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	4.125%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	6.25%
Long-term Debt	$ 801

Latest year the outstanding debt instruments are required to be repaid.

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Earliest year the outstanding debt instruments are required to be repaid.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

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Maximum contractual interest rate for funds borrowed, under the debt agreement.

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Minimum contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-SubTopic 210

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Amount of long-term debt and capital lease obligation due after one year or beyond the normal operating cycle, if longer.

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-Number Topic 6

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Amount of long-term debt and capital leases due within one year or the normal operating cycle, if longer.

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Amount of long-term debt and capital lease obligations including current maturities.

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