Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments (Details) (Roll-forward of Level 3 Financial Investments)

v2.4.0.6
Financial Instruments (Details) (Roll-forward of Level 3 Financial Investments) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Beginning Balance $ 28 $ 38
Redemption (13) (6)
Ending Balance $ 15 $ 32