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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

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.

X

- Definition

Fair Value Inputs, Credit Spreads

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X

- Definition

Percentage of credit support for financial asset.

+ References

No definition available.

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X

- Definition

Fair Value Inputs Mortgage Servicing Right Multiple

+ References

No definition available.

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X

- Definition

Fair Value Inputs, Pool Fallout Assumption

+ References

No definition available.

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X

- Definition

Fair Value Inputs, Recovery Rate

+ References

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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

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X

- 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

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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

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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

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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

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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



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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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