Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details 2)

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Fair Value Measurements (Details 2) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 28, 2013
Jun. 29, 2012
Jun. 28, 2013
Jun. 29, 2012
Nonrecurring fair value measurements        
Investment value write down $ 144   $ 144  
Gain (loss) form issuance of additional shares by an equity investee $ 139 $ 92 $ 139 $ 92