Derivative Instruments And Hedging Activity - Additional Information (Detail) (USD $)	3 Months Ended
	Apr. 05, 2015	Dec. 31, 2014	Mar. 30, 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	2 years
Cash and equivalents	4,412,000,000	4,388,000,000	4,296,000,000	5,301,000,000
Notional forward foreign exchange contracts outstanding	9,000,000,000	9,100,000,000
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