Credit Derivative, Amount of the Collateral Posted, based in MTM valuation of the underlying exposure

No definition available.

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- Definition

Represents the unrealized gain (loss) on credit derivatives resulting from tightening of spreads.

+ References

No definition available.

+ Details

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- Definition

Represents the maximum exposure to any one industry in the pool of underlying assets, expressed as a percentage of the total pool.

+ References

No definition available.

+ Details

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- Definition

Represents the maximum average size of the individual obligors represented in the pool of underlying assets, expressed as a percentage of the total pool.

+ References

No definition available.

+ Details

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- Definition

Credit Derivative, Notional Amount Subject to Collateral based in MTM valuation of the underlying exposure

+ References

No definition available.

+ Details

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- Definition

Represents the outstanding principal amounts of the underlying insured obligations that are accounted for as credit derivatives, net of protection purchased.

+ References

No definition available.

+ Details

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- Definition

Gain (Loss) Due to Change in Methodology in Expected Recoveries

+ References

No definition available.

+ Details

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- Definition

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

+ References

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

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Average period covered by credit risk derivative contracts, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4K

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5708775-113959

+ Details

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Period Type:	duration

- Definition

The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4H

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624258-113959

+ Details

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- 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/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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (a),(c),(d),(e)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959

+ Details

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- Definition

Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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- Definition

Number of credit risk derivative instruments held.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959

+ Details

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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://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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- Details

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Financial Guaranty Contracts Accounted for as Credit Derivatives - Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Credit Derivatives
Estimated remaining weighted average life of credit derivatives (in years)	4 years 7 months 30 days		4 years 7 months 30 days
Net par outstanding	$ 31,731		$ 34,996
Net unrealized gains (losses)	103us-gaap_UnrealizedGainLossOnDerivatives	(230)us-gaap_UnrealizedGainLossOnDerivatives
Net change in fair value of credit derivatives	124	(211)
Gain due to change in methodology in expected recoveries	49
Gain from narrowing of spreads	209
Collateral agreed to be posted	356		376
Market value collateralized debt obligations of corporate obligations [Member]
Credit Derivatives
Maximum average obligor size (as a percent)	1.00%
Maximum exposure of one industry (as a percent)	10.00%
Net par outstanding	20,735		23,621
Net unrealized gains (losses)	17	(58)
Other pooled infrastructure [Member]
Credit Derivatives
Net par outstanding	1,900
Pooled infrastructure [Member]
Credit Derivatives
Number of transactions	1
Remaining other CDS [Member]
Credit Derivatives
Net par outstanding	4,400
Collateral Debt Obligations, Collateral Requirement [Member]
Credit Derivatives
Amount of par subject to collateral for which the amount of collateral is capped	5,700
Collateral Debt Obligations, Collateral Cap Negotiated [Member]
Credit Derivatives
Amount of par subject to collateral for which the amount of collateral is capped	5,500
Collateral Debt Obligations, No Cap Negotiated [Member]
Credit Derivatives
Amount of par subject to collateral for which the amount of collateral is capped	665
Collateral agreed to be posted	356		376
Notional amount subject to collateral based on movements in the mark-to-market valuation of the underlying exposure	241		242
Collateral posted, based on mark-to-market valuation	21		25
Credit Risk Contract [Member]
Credit Derivatives
Realized gains (losses) and other settlements	$ 11.0	$ 0.2