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Municipal Bond Guarantee (Tables) | 3 Months Ended
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Mar. 31, 2015
Guarantees [Abstract] |
Schedule of Municipal Bond Guarantee Insured Obligations | The following table provides a schedule of BAM’s insured obligations:
|  | March 31, 2015 |  | December 31, 2014
Contracts outstanding |  | 2,029 |  |  | 1,750 |
Remaining weighted average contract period outstanding (in years) |  | 12.8 |  |  | 12.8 |
Contractual debt service outstanding (in millions): |  |  |  |
Par |  | $ | 14,421.6 |  |  | $ | 12,362.5 |
Interest |  | 8,044.7 |  |  | 7,086.9 |
Total debt service outstanding |  | $ | 22,466.3 |  |  | $ | 19,449.4 |
Gross unearned insurance premiums |  | $ | 31.2 |  |  | $ | 27.6 |

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