Name:	ago_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedFinancialAssetsUnderManagement
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Represents the number of holding companies in the entity's organizational structure having outstanding public debt.

No definition available.

Name:	ago_NumberOfHoldingCompaniesHavingOutstandingPublicDebt
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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.

No definition available.

Name:	us-gaap_BusinessAcquisitionLineItems
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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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- References

No definition available.

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The cash outflow associated with other payments to acquire businesses including deposit on pending acquisitions and preacquisition costs.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
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