Derivative Instruments And Hedging Activity - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Oct. 04, 2015	Dec. 31, 2014	Sep. 28, 2014	Dec. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Fair Value Hedges, Net	$ 0	$ 0
Average maturity of foreign currency forward contracts, in years	3 years
Cash and equivalents	$ 3,372	4,388	$ 5,105	$ 5,301
Notional forward foreign exchange contracts outstanding	8,000	9,100
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value, Net	$ 0	$ 0
Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Maturity of fixed-income securities, in years	5 years