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Municipal Bond Guarantee (Tables) | 6 Months Ended
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Jun. 30, 2013
Schedule of insured obligations [Abstract] |
Schedule of Municipal Guarantee Insured Obligations [Table Text Block] | The following table provides a schedule of BAM's insured obligations:
|  | June 30, 2013 |  | December 31, 2012
Contracts issued and outstanding |  | 318 |  |  | 3 |
Remaining weighted average contract period (in years) |  | 14.2 |  |  | 10.4 |
Contractual debt service outstanding (in millions): |  |  |  |
Principal |  | $ | 2,125.7 |  |  | $ | 25.8 |
Interest |  | $ | 1,260.3 |  |  | $ | 8.9 |
Unearned premium revenue |  | $ | 5.3 |  |  | $ | .1 |

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