Summary of Major Components of Merger, Restructuring and Other Operating Expenses, Net (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
Merger related expenses
Merger related expenses, Severance, retention, and relocation	$ 4	$ 17	$ 15	$ 136
Merger related expenses, Transaction and integration	16	33	69	92
Merger related expenses,Facility closure, contract termination and other costs, net	18	5	32	14
Total Merger related expenses	38	55	116	242
International restructuring and certain other expenses
Severance and retention	20	10	45	20
International restructuring and certain other expenses, Integration	1	2	5	7
International restructuring and certain other expenses, Other related expenses	6	5	13	7
Total International restructuring and certain other expenses	27	17	63	34
Staples Acquisition expenses	46		95
Total Merger, restructuring and other operating expenses, net	$ 111	$ 72	$ 274	$ 276