Net Income (Loss) Per Share (Details) (Components of Basic and Diluted Income (Loss) Per Share) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Numerator – Net income (loss):
Net income (loss)	$ 17	$ 48	$ (39)	$ (172)
Denominator – Weighted average shares
Weighted-average shares outstanding, basic	770	757	765	753
Effect of potentially dilutive shares:
Employee stock options, restricted stock and restricted stock units	15	7	0	0
Weighted-average shares outstanding, diluted	785	764	765	753
Basic net income (loss) per share	$ 0.02	$ 0.06	$ (0.05)	$ (0.23)
Diluted net income (loss) per share	$ 0.02	$ 0.06	$ (0.05)	$ (0.23)
Stock Options, Restricted Stock and Restricted Stock Units
Earnings per Share [Line Items]
Anti-dilutive shares	28	53	46	61