Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 28, 2013	Jun. 29, 2012	Dec. 31, 2012
Schedule Of Income Taxes [Line Items]
Effective tax rate	29.80%	33.90%
Tax benefit	$ 5	$ 10
Recognized income tax benefit related to reversal of accrued amounts	8
Anticipated decrease in unrecognized tax benefits over the next 12 months	17
Accrued potential interest included within non-current income taxes payable	11		11
Accrued potential interest included within non-current income taxes payable, after income taxes	7		6
Potential penalties	7		7
U.S. Federal Research and Experimentation Tax Credit [Member]
Schedule Of Income Taxes [Line Items]
Tax benefit	$ 15