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. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Numerator
Net income (loss)	$ 48	$ (157)	$ (172)	$ (710)
Denominator
Weighted-average shares outstanding, basic	757	745	753	739
Employee stock options and restricted stock units	7	0	0	0
Weighted-average shares outstanding, diluted	764	745	753	739
Basic net income (loss) per share	$ 0.06	$ (0.21)	$ (0.23)	$ (0.96)
Diluted net income (loss) per share	$ 0.06	$ (0.21)	$ (0.23)	$ (0.96)
5.75% Notes
Denominator
Anti-dilutive shares		12		20
Stock Options and Restricted Stock Units
Denominator
Anti-dilutive shares	53	71	61	62