Acquisitions, Intangible Assets And Goodwill - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 04, 2015 USD ($)	Sep. 28, 2014 USD ($)	Oct. 04, 2015 USD ($)	Sep. 28, 2014 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Number of Businesses Acquired			0
Amortization expense	$ 29	$ 30	$ 88	$ 91
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	$ 116		$ 116