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- Details

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Namespace Prefix:	ago_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the cash collected against the premiums for financial guaranty insurance contracts of variable interest entity.

No definition available.

Name:	ago_VariableInterestEntityFinancialGuarantyInsuranceContractsPremiumsCollectedInCash
Namespace Prefix:	ago_
Data Type:	xbrli:monetaryItemType
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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the fourth fiscal quarter following the latest fiscal year.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 310

-Section 50

-Paragraph 3

-Subparagraph (b)(1)

-URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 163

-Paragraph 30

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the second fiscal quarter following the latest fiscal year.

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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the third fiscal quarter following the latest fiscal year.

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Namespace Prefix:	us-gaap_
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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the eleventh through the fifteenth fiscal year following the latest fiscal year.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 310

-Section 50

-Paragraph 3

-Subparagraph (b)(2)

-URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 163

-Paragraph 30

-Subparagraph b(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the sixteenth through the twentieth fiscal year following the latest fiscal year.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 310

-Section 50

-Paragraph 3

-Subparagraph (b)(2)

-URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 163

-Paragraph 30

-Subparagraph b(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the sixth through the tenth fiscal year following the latest fiscal year.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 310

-Section 50

-Paragraph 3

-Subparagraph (b)(2)

-URI http://asc.fasb.org/extlink&oid=6933075&loc=SL5748726-161290

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 163

-Paragraph 30

-Subparagraph b(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the fifth fiscal year following the latest fiscal year.

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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the second fiscal year following the latest fiscal year.

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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the fourth fiscal year following the latest fiscal year.

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Amount of premium receivables under financial guarantee insurance contracts expected to be collected in the third fiscal year following the latest fiscal year.

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Namespace Prefix:	us-gaap_
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Amount of premium receivables under financial guarantee insurance contracts.

No definition available.