Schedule of Goodwill by Segment (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 28, 2015	Dec. 27, 2014
Goodwill [Line Items]
Balance as of December 27, 2014	$ 391us-gaap_Goodwill
Goodwill		1,649us-gaap_GoodwillGross
Additions	6us-gaap_GoodwillPeriodIncreaseDecrease
Accumulated impairment losses		(1,258)
Balance as of March 28, 2015	397us-gaap_Goodwill
Balance	397us-gaap_Goodwill
North American Retail Division
Goodwill [Line Items]
Balance as of December 27, 2014		78
Goodwill		80
Accumulated impairment losses		(2)
Balance as of March 28, 2015	78	78
Balance	78	78
North American Business Solutions Division
Goodwill [Line Items]
Balance as of December 27, 2014	298
Goodwill		647
Additions	6
Accumulated impairment losses		(349)
Balance as of March 28, 2015	304
Balance	304
International Division
Goodwill [Line Items]
Balance as of December 27, 2014		15
Goodwill		922
Accumulated impairment losses		(907)
Balance as of March 28, 2015	15	15
Balance	$ 15	$ 15

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a,h)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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