Segment, Geographic and Other Revenue Information - Narrative (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 29, 2014 Operating_Segment	Dec. 31, 2013	Jun. 30, 2013 Selling Informational And Administrative Expenses [Member]	Jun. 30, 2013 Selling Informational And Administrative Expenses [Member]	Jun. 30, 2013 Worldwide Research and Development Expense [Member]	Jun. 30, 2013 Worldwide Research and Development Expense [Member]
Segment Reporting Information [Line Items]
Number of operating segments (in operating segments)	3
Amounts subject to allocation			$ 520	$ 1,000	$ 160	$ 420
Total assets	$ 172,612	$ 172,101