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Fair Value of Pension Plan Assets (Detail) - North America - Pension Benefits - USD ($) $ in Millions	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 922	$ 1,039	$ 986
Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19	18
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	87	86
Equity Securities | U S Large Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	25	24
Equity Securities | Us Small And Mid Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	4
Equity Securities | International
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58	58
Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	519	670
Fixed Income Securities | Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	485	612
Fixed Income Securities | US Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10	19
Fixed Income Securities | Other Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	24	39
All Other Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	297	265
All Other Securities | Equity Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		255
All Other Securities | Other Including Plan Receivables And Payables
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7	10
All Other Securities | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	290
Quoted Prices in Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	94	96
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	87	86
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities | U S Large Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	25	24
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities | Us Small And Mid Cap
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4	4
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities | International
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	58	58
Quoted Prices in Active Markets for Identical Assets (Level 1) | All Other Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7	10
Quoted Prices in Active Markets for Identical Assets (Level 1) | All Other Securities | Other Including Plan Receivables And Payables
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7	10
Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	828	943
Significant Observable Inputs (Level 2) | Money Market Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	19	18
Significant Observable Inputs (Level 2) | Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	519	670
Significant Observable Inputs (Level 2) | Fixed Income Securities | Corporate Bond Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	485	612
Significant Observable Inputs (Level 2) | Fixed Income Securities | US Treasury Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	10	19
Significant Observable Inputs (Level 2) | Fixed Income Securities | Other Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	24	39
Significant Observable Inputs (Level 2) | All Other Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	290	255
Significant Observable Inputs (Level 2) | All Other Securities | Equity Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 255
Significant Observable Inputs (Level 2) | All Other Securities | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 290

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+ References

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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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