XML 61 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Obligations under Investment Agreements (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2013
Text Block [Abstract] |
Principal Due under Investment and Investment Repurchase Agreements, Based on Expected Optional Draw Date | Principal due under investment and investment repurchase agreements, based on the expected optional draw date, in each of the next five years ending December 31, and the periods thereafter, are as follows:
|  | Principal Amount |
2014 |  | $ | — |
2015 |  |  | 44,374 |
2016 |  |  | 190,051 |
2017 |  |  | 124,308 |
2018 |  |  | — |
All later years |  |  | — |
|  | $ | 358,733 |

X
- Definition Expected Principal Payments Due Under Investment Agreements Table [Text Block] + References No definition available. + Details
Name: | ambc_ExpectedPrincipalPaymentsDueUnderInvestmentAgreementsTableTextBlock
Namespace Prefix: | ambc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_TextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration