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Municipal Bond Guarantee (Tables)
6 Months Ended
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