Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

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- Definition

Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, That Will Be Amortized into Interest Expense

+ References

No definition available.

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- Definition

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580

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-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14

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-Topic 220

-SubTopic 10

-Section 45

-Paragraph 14A

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-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 10A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580

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-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 2

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5618551-113959

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- Definition

The effective portion of loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

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Derivative Financial Instruments - Additional Information (Detail) (USD $)			3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended						3 Months Ended		9 Months Ended			3 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Cash Flow Hedging Interest Rate Swaps	Sep. 30, 2013 Cash Flow Hedging Interest Rate Swaps	Sep. 30, 2014 Cash Flow Hedging Interest Rate Swaps	Sep. 30, 2013 Cash Flow Hedging Interest Rate Swaps	Sep. 30, 2014 Loan Purchase and Forward Sales Commitments	Sep. 30, 2014 Loan Purchase and Forward Sales Commitments	Sep. 30, 2014 Unsecuritized Residential and Commercial Loans	Sep. 30, 2014 Unsecuritized Residential and Commercial Loans	Sep. 30, 2013 Unsecuritized Residential and Commercial Loans	Sep. 30, 2014 Unsecuritized Residential and Commercial Loans Interest Rate Contract	Sep. 30, 2014 Unsecuritized Residential and Commercial Loans Futures	Sep. 30, 2014 Unsecuritized Residential and Commercial Loans TBAs	Sep. 30, 2014 Unsecuritized Residential and Commercial Loans Credit Default Index Swaps	Sep. 30, 2014 Maximum	Sep. 30, 2013 Maximum	Sep. 30, 2014 Maximum	Sep. 30, 2013 Maximum	Sep. 30, 2014 Maximum Interest Rate Swaps	Sep. 30, 2013 Maximum Unsecuritized Residential and Commercial Loans
Derivative [Line Items]
Notional Amount	$ 3,555,452,000	$ 1,488,922,000	$ 140,000,000		$ 140,000,000							$ 635,000,000	$ 108,000,000	$ 1,900,000,000	$ 75,000,000
Valuation adjustments on derivatives			(3,000,000)	4,000,000	(17,000,000)	25,000,000	2,000,000	6,000,000	(4,000,000)	(29,000,000)	51,000,000										1,000,000
Net unrealized losses on interest rate agreements accounted for as cash flow hedges	33,000,000	16,000,000
Hedges decreased in value recorded as a component of interest expense																100,000	100,000	131,000	219,000
Accumulated other comprehensive loss that will be amortized into interest expense																				$ (1,000,000)