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Municipal Bond Guarantee Insurance (Tables) | 12 Months Ended
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Dec. 31, 2014
Schedule of Insured Financial Obligations with Credit Deterioration [Line Items] |
Schedule of Municipal Guarantee Insured Obligations [Table Text Block] | The following table provides a schedule of BAM’s insured obligations:
|  | December 31, 2014 |  | December 31, 2013
Contracts outstanding |  | 1,750 |  |  | 701 |
Remaining weighted average contract period (in years) |  | 12.8 |  |  | 13.8 |
Contractual debt service outstanding (in millions): |  |  |  |
Principal |  | $ | 12,362.5 |  |  | $ | 4,703.7 |
Interest |  | $ | 7,086.9 |  |  | $ | 3,264.4 |
Gross unearned insurance premiums |  | $ | 27.6 |  |  | $ | 13.2 |

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