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Future Application of Accounting Standards and Adoption of New Accounting Standards (Policies) | 3 Months Ended
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Mar. 31, 2013
Accounting Changes And Error Corrections [Abstract] |
Adoption of New Accounting Standards | Effective January 1, 2013, Ambac adopted ASU No. 2011-11, Disclosures about Offsetting Assets and Liabilities, and ASU No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities retrospectively for all periods presented. Upon the adoption of these ASUs, Ambac presented the offsetting disclosure requirements in Note 9, Derivative Instruments. Effective January 1, 2013, Ambac adopted ASU No. 2013-02, Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income. Upon the adoption of this ASU, Ambac presented the changes in the accumulated balances by component of other comprehensive income and the corresponding effects on net income by line item for the reclassifications out of accumulated other comprehensive income, in Note 4, Comprehensive Income.

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- Definition Disclosure of the adoption of new accounting pronouncements that may impact the entity's financial reporting. + References No definition available. + Details
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