XML 69 R99.htm IDEA: XBRL DOCUMENT
v3.20.1

Statutory Requirements and Dividends Restrictions - Summary of Statutory Requirements and Dividends Restrictions (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
U.S. |  |
Required statutory capital and surplus | $ 404.0 | $ 351.0
Actual statutory capital and surplus | 502.0 | 543.0
Bermuda |  |
Required statutory capital and surplus | 788.4 | 801.9
Actual statutory capital and surplus | 1,380.6 | 1,575.5
U.K. |  |
Required statutory capital and surplus | 782.0 | 772.1
Actual statutory capital and surplus | $ 841.9 | $ 857.9

X
- Definition Dividend payments restrictions schedule required statutory capital and surplus. + References No definition available. + Details
Name: | ahl_DividendPaymentsRestrictionsScheduleRequiredStatutoryCapitalAndSurplus
Namespace Prefix: | ahl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of statutory capital and surplus computed using prescribed or permitted statutory accounting practice. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529 + Details
Name: | us-gaap_DividendPaymentsRestrictionsScheduleStatutoryCapitalAndSurplus1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=country_BM
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatutoryAccountingPracticesByJurisdictionAxis=country_GB
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |