Derivative, Gain (Loss) on Derivatives, Total Net

No definition available.

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- Definition

This element represents premiums received and receivable on credit derivative contracts, premiums paid and accrued on purchased contracts and net losses and settlements, that is included in earnings.

+ References

No definition available.

+ Details

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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/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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Derivative Instruments - Summary of Location and Amount of Gains and Losses of Derivative Contracts (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt and Equity Securities, FV-NI [Line Items]
Unrealized Gain (Loss) on Derivatives									$ (893)	$ 14,783	$ 19,194
Derivative, Gain (Loss) on Derivative, Net	$ (44,716)	$ 17,583	$ 8,932	$ 25,191	$ 31,544	$ 4,163	$ 40,692	$ (462)	6,990	75,937	(30,167)
Derivative, Gain (Loss) on Derivatives, Total Net									511,113	(59,885)	(525,625)
Net gains (losses) on derivative contracts [Domain]
Debt and Equity Securities, FV-NI [Line Items]
Realized Gains Losses And Other Settlements									388	1,589	912
Unrealized Gain (Loss) on Derivatives									(893)	14,783	19,194
Net gains (losses) on derivative contracts [Domain] \| Credit Derivatives [Member]
Debt and Equity Securities, FV-NI [Line Items]
Derivative, Gain (Loss) on Derivative, Net									(505)	16,372	20,106
Net gains (losses) on derivative contracts [Domain] \| Interest Rate Swaps [Member]
Debt and Equity Securities, FV-NI [Line Items]
Derivative, Gain (Loss) on Derivative, Net									600	48,870	(50,082)
Net gains (losses) on derivative contracts [Domain] \| Futures Contracts [Member]
Debt and Equity Securities, FV-NI [Line Items]
Derivative, Gain (Loss) on Derivative, Net									6,895	10,695	(191)
Income Loss On Variable Interest Entities [Member] \| Variable Interest Entity [Member]
Debt and Equity Securities, FV-NI [Line Items]
Derivative, Gain (Loss) on Derivative, Net									504,628	(152,194)	(515,564)
Income Loss On Variable Interest Entities [Member] \| Interest Rate Swaps [Member] \| Variable Interest Entity [Member]
Debt and Equity Securities, FV-NI [Line Items]
Derivative, Gain (Loss) on Derivative, Net									493,203	(126,664)	(574,554)
Income Loss On Variable Interest Entities [Member] \| Currency Swaps [Member] \| Variable Interest Entity [Member]
Debt and Equity Securities, FV-NI [Line Items]
Derivative, Gain (Loss) on Derivative, Net									$ 11,425	$ (25,530)	$ 58,990