XML 39 R29.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Variable Interest Entities (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2017
Payables and Accruals [Abstract] |
Summary of Silverton Loan Notes | The following tables show the total liability balance of the Loan Notes for the six months ended June 30, 2017 and 2016:
|  | For the Six Months Ended June 30, 2017
|  | Third Party |  | Aspen Holdings |  | Total
|  | ($ in millions)
Opening balance |  | $ | 223.4 |  |  | $ | 54.5 |  |  | $ | 277.9 |
Total change in fair value for the period |  | 6.2 |  |  | 1.6 |  |  | 7.8 |
Total distributed in the period |  | (114.1 | ) |  | (28.6 | ) |  | (142.7 | )
Closing balance as at June 30, 2017 |  | $ | 115.5 |  |  | $ | 27.5 |  |  | $ | 143.0 |
Liability |  |  |  |  |  |
Loan notes (long-term liabilities) |  | $ | 110.8 |  |  | $ | 26.4 |  |  | $ | 137.2 |
Accrued expenses (current liabilities) |  | 4.7 |  |  | 1.1 |  |  | 5.8 |
Total aggregate unpaid balance as at June 30, 2017 |  | $ | 115.5 |  |  | $ | 27.5 |  |  | $ | 143.0 |
|  | For the Six Months Ended June 30, 2016
|  | Third Party |  | Aspen Holdings |  | Total
|  | ($ in millions)
Opening balance |  | $ | 190.6 |  |  | $ | 44.4 |  |  | $ | 235.0 |
Total change in fair value for the period |  | 3.9 |  |  | 1.0 |  |  | 4.9 |
Total distributed in the period |  | (89.0 | ) |  | (19.4 | ) |  | (108.4 | )
Closing balance as at June 30, 2016 |  | $ | 105.5 |  |  | $ | 26.0 |  |  | $ | 131.5 |
Liability |  |  |  |  |  |
Loan notes (long-term liabilities) |  | $ | 104.1 |  |  | $ | 25.7 |  |  | $ | 129.8 |
Accrued expenses (current liabilities) |  | 1.4 |  |  | 0.3 |  |  | 1.7 |
Total aggregate unpaid balance as at June 30, 2016 |  | $ | 105.5 |  |  | $ | 26.0 |  |  | $ | 131.5 |

X
- Definition Summary of Silverton Loan Notes [Table Text Block] + References No definition available. + Details
Name: | ahl_SummaryofSilvertonLoanNotesTableTextBlock
Namespace Prefix: | ahl_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_PayablesAndAccrualsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration