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Dividends - Summary of Declared Dividends (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 14, 2023 | Apr. 01, 2023 | Mar. 15, 2023 | Aug. 13, 2019 | Sep. 20, 2016 | Dec. 31, 2022 | Dec. 31, 2021 | Mar. 01, 2023
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Depositary share interest of 1/1000th in each 5.625% |  |  |  |  |  | 0.01% |  |
Payments of Ordinary Dividends |  |  |  |  |  | $ 40.0 |  |
5.625% Preference Shares, rep by Dep Shares (AHL PRE) |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  | 5.625% |  | 5.625% | 5.625% |
5.950% Preference Shares (AHL PRC) |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  | 5.95% | 5.95% |
5.625% Preference Shares (AHL PRD) |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  | 5.625% | 5.625% | 5.625% |
Subsequent Event |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Payments of Ordinary Dividends | $ 20.0 |  |  |  |  |  |  |
Subsequent Event | 5.625% Preference Shares, rep by Dep Shares (AHL PRE) |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Dividend, in usd per share |  |  |  |  |  |  |  | $ 351.56
Payable Date |  | Apr. 01, 2023 |  |  |  |  |  |
Record Date |  |  | Mar. 15, 2023 |  |  |  |  |
Depositary share dividend |  |  |  |  |  |  |  | $ 0.35156
Depositary share interest of 1/1000th in each 5.625% |  |  |  |  |  |  |  | 0.001%
Preferred Stock, Dividend Rate, Percentage |  |  | 5.625% |  |  |  |  |
Subsequent Event | 5.950% Preference Shares (AHL PRC) |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Dividend, in usd per share |  |  |  |  |  |  |  | $ 0.3719
Payable Date |  | Apr. 01, 2023 |  |  |  |  |  |
Record Date |  |  | Mar. 15, 2023 |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  | 5.95% |  |  |  |  |
Subsequent Event | 5.625% Preference Shares (AHL PRD) |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |
Dividend, in usd per share |  |  |  |  |  |  |  | $ 0.3516
Payable Date |  | Apr. 01, 2023 |  |  |  |  |  |
Record Date |  |  | Mar. 15, 2023 |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  | 5.625% |  |  |  |  |

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- Definition Preferred Stock, Dividend Rate, Depositary Share Fractional Interest (1/1000th of 5.625% Preference Share) + References No definition available. + Details
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- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 + Details
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- Definition Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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