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Adoption of Accounting Pronouncements (Narrative) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2011
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Adoption of Accounting Pronouncements [Abstract] |
Potential after-tax impact on stockholders' equity | $ 51

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- Definition Potential after-tax impact on the entity's stockholders' equity as a result of the adoption of the accounting pronouncement. + References No definition available. + Details
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- Details
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