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- Definition 
          The date of acquisition of subprime mortgage holdings. No definition available. 
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| X | ||||||||||
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- Definition 
          The face amount of loans at securitization of subprime mortgage holdings. No definition available. 
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| X | ||||||||||
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- Definition 
          The face amount of notes from subprime securitization retained by the company. No definition available. 
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- Definition 
          The face amount of notes sold by trust from the subprime securitization. No definition available. 
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| X | ||||||||||
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- Definition 
          The fair value of equity from subprime securitization retained by the company. No definition available. 
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- Definition 
          The gain on pre-securitization hedges of subprime mortgage holdings. No definition available. 
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- Definition 
          The gain on sale of subprime mortgage holdings. No definition available. 
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| X | ||||||||||
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- Details 
          
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| X | ||||||||||
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- Definition 
          The original face amount of subprime mortgage holdings. No definition available. 
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| X | ||||||||||
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- Definition 
          The original, approximate number of loans, at acquisition of subprime mortgage holdings. No definition available. 
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| X | ||||||||||
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- Definition 
          The predominant origination date of subprime mortgage holdings. No definition available. 
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| X | ||||||||||
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- Definition 
          The pre-securitization write-down of subprime mortgage holdings. No definition available. 
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| X | ||||||||||
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- Definition 
          The securitization date of the subprime mortgage holdings. No definition available. 
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| X | ||||||||||
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- Definition 
          The stated maturity date of notes from subprime securitization. No definition available. 
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| X | ||||||||||
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- Definition 
          Discount rate which is used to value residual cash flows generated by financial assets of the securitization, asset-backed financing arrangement, or similar transfer for initial fair value measurement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          Rate at which principal will not be repaid on securitized financial assets, including for example, but not limited to, expected static pool losses for initial fair value measurement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          Estimated rate of prepayment of principal on financial assets for initial fair value measurement. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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| X | ||||||||||
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- Definition 
          Weighted average life of securitized assets for initial fair value measurement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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