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Quantitative Information about Significant Unobservable Inputs Used in Valuation of Level 3 Assets and Liabilities Measured at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified |  |  |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended |  | 9 Months Ended
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Sep. 30, 2014 | Dec. 31, 2013 | Sep. 30, 2014 Residential Loans Priced To Securitization or Priced to Whole Loan Market, Uncommitted to Sell | Sep. 30, 2014 Residential Loans Priced To Securitization or Priced to Whole Loan Market, Uncommitted to Sell Minimum | Sep. 30, 2014 Residential Loans Priced To Securitization or Priced to Whole Loan Market, Uncommitted to Sell Maximum | Sep. 30, 2014 Residential Loans Priced To Securitization or Priced to Whole Loan Market, Uncommitted to Sell Weighted Average | Sep. 30, 2014 Residential Loans Priced To Whole Loan Market, Committed to Sell | Sep. 30, 2014 Residential Loans Priced To Whole Loan Market, Committed to Sell Minimum | Sep. 30, 2014 Residential Loans Priced To Whole Loan Market, Committed to Sell Maximum | Sep. 30, 2014 Residential Loans Priced To Whole Loan Market, Committed to Sell Weighted Average | Sep. 30, 2014 Residential Loans at Lower of Cost or Fair Value | Sep. 30, 2014 Residential Loans at Lower of Cost or Fair Value Minimum | Sep. 30, 2014 Residential Loans at Lower of Cost or Fair Value Maximum | Sep. 30, 2014 Residential Loans at Lower of Cost or Fair Value Weighted Average | Sep. 30, 2014 Commercial Loans at Fair Value | Sep. 30, 2014 Commercial Loans at Fair Value Minimum | Sep. 30, 2014 Commercial Loans at Fair Value Maximum | Sep. 30, 2014 Commercial Loans at Fair Value Weighted Average | Sep. 30, 2014 Trading and AFS securities | Sep. 30, 2014 Trading and AFS securities Minimum | Sep. 30, 2014 Trading and AFS securities Maximum | Sep. 30, 2014 Trading and AFS securities Weighted Average | Sep. 30, 2014 Mortgage Servicing Rights | Sep. 30, 2014 Mortgage Servicing Rights Minimum | Sep. 30, 2014 Mortgage Servicing Rights Maximum | Sep. 30, 2014 Mortgage Servicing Rights Weighted Average | Sep. 30, 2014 REO | Sep. 30, 2014 REO Minimum | Sep. 30, 2014 REO Maximum | Sep. 30, 2014 REO Weighted Average | Sep. 30, 2014 Loan Purchase Commitments | Sep. 30, 2014 Loan Purchase Commitments Minimum | Sep. 30, 2014 Loan Purchase Commitments Maximum | Sep. 30, 2014 Loan Purchase Commitments Weighted Average | Sep. 30, 2014 Commercial Secured Borrowings | Sep. 30, 2014 Commercial Secured Borrowings Minimum | Sep. 30, 2014 Commercial Secured Borrowings Maximum | Sep. 30, 2014 Commercial Secured Borrowings Weighted Average
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair Value | $ (851) | [1] | $ 379 | [1] | $ 758,501 |  |  |  | $ 581,932 |  |  |  | $ 1,106 |  |  |  | $ 175,421 |  |  |  | $ 1,394,985 |  |  |  | $ 135,152 |  |  |  | $ 1,994 |  |  |  | $ 851 | [2] |  |  |  |  |  |  | $ 66,146 |  |  |
Discount rate |  |  |  |  |  | 4.00% | 5.00% | 4.00% |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% | 12.00% | 6.00% |  | 8.00% | 11.00% | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prepayment rate |  |  |  |  |  | 8.00% | 8.00% | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00% | 35.00% | 12.00% |  | 4.00% | 60.00% | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Default rate |  |  |  |  |  | 1.00% | 1.00% | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% | 35.00% | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loss severity |  |  |  |  |  | 20.00% | 20.00% | 20.00% |  |  |  |  |  | 15.00% | 28.00% | 21.00% |  |  |  |  |  | 20.00% | 64.00% | 35.00% |  |  |  |  |  | 13.00% | 96.00% | 34.00% |  |  |  |  |  |  |  |  |  |  |  |
Credit support |  |  |  |  |  | 8.00% | 8.00% | 8.00% |  |  |  |  |  |  |  |  |  | 24.00% | 24.00% | 24.00% |  | 0.00% | 88.00% | 6.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24.00% | 24.00% | 24.00%
MSR Multiple |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 | [2] | 5 | [2] | 4 | [2] |  |  |  |
Spread to securitization |  |  |  |  |  | 0.38% | 0.38% | 0.38% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pullthrough rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 58.00% | [2] | 99.00% | [2] | 82.00% | [2] |  |  |  |
Credit spread |  |  |  |  |  | 1.18% | 1.73% | 1.29% |  |  |  |  |  |  |  |  |  | 1.52% | 1.52% | 1.52% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.52% | 1.52% | 1.52%
Pool fallout assumption |  |  |  |  |  |  |  |  |  | 0.10% | 0.10% | 0.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | For the purpose of this presentation, derivative assets and liabilities, which consist of loan purchase commitments, are presented net.
[2] | For the purpose of this presentation loan purchase commitment assets and liabilities are presented net.

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- Definition Fair Value Inputs, Credit Spreads + References No definition available. + Details
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- Definition Percentage of credit support for financial asset. + References No definition available. + Details
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- Definition Fair Value Inputs Mortgage Servicing Right Multiple + References No definition available. + Details
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- Definition Fair Value Inputs, Pool Fallout Assumption + References No definition available. + Details
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- Definition Fair Value Inputs, Recovery Rate + References No definition available. + Details
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- Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Risk associated with risk of default, credit spread risk and downgrade risk, expressed as a percentage, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Loss, including interest and principal, incurred on a defaulted security, expressed as a percentage of the original principal balance, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Percentage of likelihood a loan will not be repaid and instead default, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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