Schedule of Goodwill by Segment (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 26, 2015	Dec. 27, 2014
Goodwill [Line Items]
Balance as of December 27, 2014	$ 391
Goodwill		$ 1,649
Additions	5
Accumulated impairment losses		(1,258)
Balance as of September 26, 2015	396
Balance	391	391
North American Retail Division
Goodwill [Line Items]
Balance as of December 27, 2014	78
Goodwill		80
Accumulated impairment losses		(2)
Balance as of September 26, 2015	78
Balance	78	78
North American Business Solutions Division
Goodwill [Line Items]
Balance as of December 27, 2014	298
Goodwill		647
Additions	5
Accumulated impairment losses		(349)
Balance as of September 26, 2015	303
Balance	298	298
International Division
Goodwill [Line Items]
Balance as of December 27, 2014	15
Goodwill		922
Accumulated impairment losses		(907)
Balance as of September 26, 2015	15
Balance	$ 15	$ 15