Acquisition and Dispositions - Additional Information (Detail) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended
	Aug. 31, 2014	Mar. 28, 2015 USD ($)	Sep. 26, 2015 USD ($)	Feb. 04, 2015 $ / shares	Dec. 27, 2014 USD ($)
Business Acquisition [Line Items]
Other acquisition, purchase consideration		$ 9
Current assets held for sale			$ 52		$ 31
Grupo OfficeMax
Business Acquisition [Line Items]
Sale of stock, percentage of ownership before transaction	51.00%
Staples, Inc.
Business Acquisition [Line Items]
Common stock issued in cash | $ / shares				$ 7.25
Business acquisition common stock exchange ratio				0.2188