Investments In Available-For-Sale Securities And Other Cost Investments (Unrealized Holding Gains And Losses) (Details) (USD $) In Millions |
Sep. 30, 2011 |
Dec. 31, 2010 |
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Equity Securities [Member] |
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Gross unrealized holding gains | $ 0 | $ 32 |
Gross unrealized holding losses | 0 | 0 |
Debt Securities [Member] |
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Gross unrealized holding gains | 0 | 66 |
Gross unrealized holding losses | $ 0 | $ 0 |
X | ||||||||||
- Definition This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.
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