Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Statement of Comprehensive Income [Abstract]
Tax (expense) benefit on related to increase (decrease) in accumulated gain (loss) from unrealized gain (loss) on available-for-sale securities	$ 1	$ 0	$ 1	$ 0
Tax (expense) benefit on related to increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges	$ 2	$ 0	$ (3)	$ 0