Merger, Restructuring and Other Accruals - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				12 Months Ended
	Dec. 28, 2013	Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Merger, restructuring, and other operating expenses, net	$ 111	$ 44	$ 26	$ 19	$ 201	$ 56	$ 56
Merger and other expenses					180
Net restructuring expenses					21
Merger-related transaction and integration expense					80
Merger-related employee expenses					92
Certain shareholders related and other expenses					8
Termination benefits and facility closure costs					23
Employee termination costs					94
Facilities closing cost					$ 4