Quarterly report pursuant to Section 13 or 15(d)

Investments (Details)

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Investments (Details) (USD $)
In Millions, unless otherwise specified
Mar. 30, 2012
Dec. 31, 2011
Trading Securities    
Trading securities, net unrealized (gains) losses $ (14) $ 5
Marketable Securities 153 138
Other Assets 74 73
Total trading securities $ 227 $ 211