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USD ($)
USD ($) / shares
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USD ($)
USD ($) / shares
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12/31/2010
USD ($)
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12/31/2009
USD ($)
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12/21/2005
USD ($)
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-Name FASB Interpretation (FIN)
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-Name FASB Interpretation (FIN)
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-Name Statement of Financial Accounting Standard (FAS)
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falsefalse512Commitments and Contingencies (Details) (USD $)MillionsUnKnownUnKnownUnKnownfalsetrue
