Property And Equipment - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 210us-gaap_Depreciation	$ 149us-gaap_Depreciation	$ 152us-gaap_Depreciation
Capitalized software costs, Gross	558	531
Capitalized software costs, Net	148us-gaap_CapitalizedComputerSoftwareNet	236us-gaap_CapitalizedComputerSoftwareNet
Amortization of capitalized software costs	86	56	46
Long lived assets held for sale	$ 31
Capitalized Software
Property, Plant and Equipment [Line Items]
Weighted average remaining amortization period	2 years 9 months 18 days

For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

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Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

+ References

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

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

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- Definition

Amount classified as long lived assets attributable to disposal group held for sale or disposed of.

+ References

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- Definition

Weighted average period before the next renewal or extension (both explicit and implicit) for intangible assets that have been renewed or extended, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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