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Components of Asset-Backed Securities Issued by Consolidated Securitization Entities Sponsored, Along With Other Selected Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended									6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended					6 Months Ended	12 Months Ended			6 Months Ended	12 Months Ended
	Mar. 31, 2013	Jun. 30, 2014 Asset-backed Securities	Dec. 31, 2013 Asset-backed Securities	Jun. 30, 2014 Asset-backed Securities Certificates With Principal Value	Dec. 31, 2013 Asset-backed Securities Certificates With Principal Value	Jun. 30, 2014 Asset-backed Securities Interest Only Certificates	Dec. 31, 2013 Asset-backed Securities Interest Only Certificates	Jun. 30, 2014 Asset-backed Securities Sequoia Contract	Dec. 31, 2013 Asset-backed Securities Sequoia Contract	Jun. 30, 2014 Asset-backed Securities Sequoia Minimum	Dec. 31, 2013 Asset-backed Securities Sequoia Minimum	Jun. 30, 2014 Asset-backed Securities Sequoia Maximum	Dec. 31, 2013 Asset-backed Securities Sequoia Maximum	Jun. 30, 2014 Asset-backed Securities Sequoia Certificates With Principal Value	Dec. 31, 2013 Asset-backed Securities Sequoia Certificates With Principal Value	Jun. 30, 2014 Asset-backed Securities Sequoia Interest Only Certificates	Dec. 31, 2013 Asset-backed Securities Sequoia Interest Only Certificates	Jun. 30, 2014 Asset-backed Securities Residential Resecuritization Contract	Dec. 31, 2013 Asset-backed Securities Residential Resecuritization Contract	Jun. 30, 2014 Asset-backed Securities Residential Resecuritization Certificates With Principal Value	Dec. 31, 2013 Asset-backed Securities Residential Resecuritization Certificates With Principal Value	Jun. 30, 2014 Asset-backed Securities Commercial Securitization Contract	Dec. 31, 2013 Asset-backed Securities Commercial Securitization Contract	Jun. 30, 2014 Asset-backed Securities Commercial Securitization Certificates With Principal Value	Dec. 31, 2013 Asset-backed Securities Commercial Securitization Certificates With Principal Value
Debt Instrument [Line Items]
Principal value				$ 1,780,352	$ 1,956,951	$ 2,605	$ 3,400							$ 1,565,943	$ 1,708,324	$ 2,605	$ 3,400			$ 69,709	$ 94,934			$ 144,700	$ 153,693
Unamortized discount		(14,879)	(17,389)					(14,879)	(17,389)
Total ABS Issued		$ 1,768,078	$ 1,942,962					$ 1,553,669	$ 1,694,335									$ 69,709	$ 94,934			$ 144,700	$ 153,693
Weighted average interest rates, by series										0.11%	0.24%	4.25%	4.23%					2.21%	2.21%			5.62%	5.62%
Stated maturities	2018									2014	2014	2047	2047					2046	2046			2018	2018
Number of series								24	24									1	1			1	1

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Debt Instrument Maturity Year

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Face (par) amount of debt instrument at time of issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



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-Section 55

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399



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Weighted average interest rate of debt outstanding.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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-Paragraph 1

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-Paragraph 19, 20, 22

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