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Available-For-Sale Investments (Summary Of Contractual Maturities Of Available-For-Sale Securities) (Details) (USD $)
In Millions
Jun. 30, 2011
Available-For-Sale Investments  
Less than one year $ 1,385
Due in 1-5 years 352
Due in 5-10 years 0
Due after 10 years 52 [1]
Total 1,789
Asset based securities that mature over time $ 41
[1] Includes $41 million of asset-based securities that mature over time and are being reported at their final maturity dates