Acquisitions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		0 Months Ended
	Dec. 27, 2013	Jun. 28, 2013	Oct. 17, 2013 Virident [Member]	Sep. 12, 2013 sTec [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred			$ 613	$ 336
Business Acquisition, Cost of Acquired Entity, Cash Paid			598	325
Fair Value Of Stock Options Assumed			15
Fair Value Of Stock Options And Restricted Stock Based Awards\Assumed				11
Value allocated to goodwill	$ 2,555	$ 1,954	$ 505	$ 85
Period of measurement	12 months