Summary of Major Components of Merger, Restructuring and Other Operating Expenses, Net (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 26, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Merger related expenses
Merger related expenses, Severance, retention, and relocation									$ 15	$ 148	$ 92
Merger related expenses, Transaction and integration									81	124	80
Merger related expenses,Facility closure, contract termination and other expenses, net									44	60	8
Total Merger related expenses									140	332	180
International restructuring and certain other expenses
Severance and retention									63	55	17
International restructuring and certain other expenses, Integration									6	9
International restructuring and certain other expenses, Other related expenses									12	7	4
Total International restructuring and certain other expenses									81	71	21
Staples Acquisition expenses
Retention									72
Transaction	$ 39								39
Total Staples Acquisition expenses									111
Total Merger, restructuring and other operating expenses, net	$ 58	$ 111	$ 120	$ 43	$ 128	$ 72	$ 103	$ 101	$ 332	$ 403	$ 201