XML 64 R13.htm IDEA: XBRL DOCUMENT
v3.24.3

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - 6K (Parenthetical) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Statement of Stockholders' Equity [Abstract] |  |  |  |  |
Aggregate liquidation preferences | $ 775.0 | $ 775.0 | $ 775.0 | $ 775.0 | $ 775.0
Preferred stock issuance cost | $ 21.5 | $ 21.5 | $ 21.5 | $ 21.5 | $ 21.5

X
- Definition Aggregate liquidation preferences. + References No definition available. + Details
Name: | ahl_AggregateLiquidationPreferences
Namespace Prefix: | ahl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Preferred stock issuance cost. + References No definition available. + Details
Name: | ahl_PreferredStockIssuanceCost
Namespace Prefix: | ahl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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