XML 161 R96.htm IDEA: XBRL DOCUMENT
v3.23.4

Investments Investments - Debt Service and Fixed Charge Coverage Ratios (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Commercial mortgage loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | $ 295.0 | $ 312.1 | $ 211.5
Commercial mortgage loans | 295.0 | 292.2 | 147.5
Delinquent amount of loans at end of period | 0.0 | 19.9 | 64.0
Commercial mortgage loans | Nonperforming loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 0.0 | 0.0 | 0.0
Commercial mortgage loans | Less than 50 Percent |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 47.5 | 41.1 | 0.0
Commercial mortgage loans | 50 to 60 Percent |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 227.3 | 248.3 | 131.2
Commercial mortgage loans | 61 to 70 Percent |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 20.2 | 22.7 | 80.3
Middle market loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 102.1 | 106.9 | 65.4
Middle market loans | Less than 50 Percent |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 63.5 | 63.5 | 11.0
Middle market loans | 50 to 60 Percent |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 23.3 | 16.4 | 9.2
Middle market loans | 61 to 70 Percent |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 15.3 | 27.0 | 15.8
Middle market loans | 71 to 80 Percent |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading |  | 0.0 | 5.6
Middle market loans | 80 to 100 Percent |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading |  | 0.0 | 12.0
Greater than 1.20x | Commercial mortgage loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 112.3 | 106.1 | 66.3
Greater than 1.20x | Middle market loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 78.9 | 95.2 | 25.8
1.00 - 1.20x | Commercial mortgage loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 182.7 | 186.1 | 62.4
1.00 - 1.20x | Middle market loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 3.8 | 3.8 | 22.8
Less than 1.00x | Commercial mortgage loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | 0.0 | 0.0 | 18.8
Less than 1.00x | Middle market loans |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Fair market value, trading | $ 19.4 | $ 7.9 | $ 16.8

X
- Definition CML less non-performing or future construction + References No definition available. + Details
Name: | ahl_CMLLessNonPerformingOrFutureConstruction
Namespace Prefix: | ahl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This is the principal amount of loans (across all types of loans) that are overdue in payment by a set number of days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (e)(4) -URI https://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719 + Details
Name: | us-gaap_DelinquentAmountAtEndOfPeriodOnLoansManagedAndSecuritized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LoansAndLeasesReceivableDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_TradingSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanToValueAxis=ahl_DebttoValueRatioLessthan50PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanToValueAxis=ahl_DebttoValueRatio50to60PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanToValueAxis=ahl_DebttoValueRatio61to70PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=ahl_MiddlemarketloansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanToValueAxis=ahl_DebttoValueRatio71to80PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanToValueAxis=us-gaap_Ltv80To100PercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ahl_DebtServiceCoverageRatioAxis=ahl_DebtServiceCoverageRatioGreaterThan1.2xMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ahl_DebtServiceCoverageRatioAxis=ahl_DebtServiceCoverageRatio1.00to1.20xMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ahl_DebtServiceCoverageRatioAxis=ahl_DebtServiceCoverageRatioLessThan1.00xMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |