Net Income (Loss) Per Share (Details) (Components of Basic and Diluted Income (Loss) Per Share) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Numerator – Net income (loss):
Net loss	$ (181)	$ (36)	$ (361)	$ (56)
Denominator – Weighted average shares
Weighted-average shares outstanding, basic and diluted	778	764	778	762
Basic	$ (0.23)	$ (0.05)	$ (0.46)	$ (0.07)
Diluted	$ (0.23)	$ (0.05)	$ (0.46)	$ (0.07)
Stock Options, Restricted Stock and Restricted Stock Units
Earnings per Share
Anti-dilutive shares	51	39	63	45