Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) Per Share (Components Of Basic And Diluted Income (Loss) Per Share) (Details)

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Net Income (Loss) Per Share (Components Of Basic And Diluted Income (Loss) Per Share) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Earnings Per Share [Abstract]        
Numerator for basic income (loss) per share $ 37 $ 61 $ (553) $ 571
Interest expense and amortization of financing cost 0 0 0 15
Numerator for basic and diluted net income (loss) per share $ 37 $ 61 $ (553) $ 586
Denominator for basic and diluted income (loss) per share 739 724 737 722
Employee stock options and restricted stock units 16 19 0 20
5.75% convertible senior notes 0 0    24
Denominator for basic and diluted income (loss) per share 755 743 737 766
Basic $ 0.05 $ 0.08 $ (0.75) $ 0.79
Diluted $ 0.05 $ 0.08 $ (0.75) $ 0.76