XML 57 R47.htm IDEA: XBRL DOCUMENT
v3.23.1

FAIR VALUE MEASUREMENTS - Significant Unobservable Inputs (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Other investments, at fair value | $ 1,008,887 | $ 996,751
Fixed maturities, available for sale | 11,627,555 | 11,326,894
Significant unobservable inputs (Level 3) |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Other investments, at fair value | 145,972 | 141,174
Fixed maturities, available for sale | 130,427 | $ 119,104
Significant unobservable inputs (Level 3) | Other investments - CLO-Equities | Discounted cash flow |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Other investments, at fair value | $ 5,019 |
Estimated maturity date | 5 years |
Significant unobservable inputs (Level 3) | Other investments - CLO-Equities | Discounted cash flow | Weighted average |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Estimated maturity date | 5 years |
Significant unobservable inputs (Level 3) | Other investments - CLO-Equities | Discounted cash flow | Default rate |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.045 |
Significant unobservable inputs (Level 3) | Other investments - CLO-Equities | Discounted cash flow | Default rate | Weighted average |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.045 |
Significant unobservable inputs (Level 3) | Other investments - CLO-Equities | Discounted cash flow | Loss severity rate |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.500 |
Significant unobservable inputs (Level 3) | Other investments - CLO-Equities | Discounted cash flow | Loss severity rate | Weighted average |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.500 |
Significant unobservable inputs (Level 3) | Other investments - CLO-Equities | Discounted cash flow | Collateral spread |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.030 |
Significant unobservable inputs (Level 3) | Other investments - CLO-Equities | Discounted cash flow | Collateral spread | Weighted average |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.030 |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Other investments, at fair value | $ 17,522 |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Weighted average |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Estimated maturity date | 2 years |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Minimum |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Estimated maturity date | 1 year |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Maximum |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Estimated maturity date | 3 years |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Discount rate |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.066 |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Discount rate | Weighted average |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.066 |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Default rate |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.005 |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Default rate | Weighted average |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.005 |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Loss absorption yield |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.010 |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Discounted cash flow | Loss absorption yield | Weighted average |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Unobservable input (as a percent) | 0.010 |
Significant unobservable inputs (Level 3) | Other investments - Other privately held investments | Valuation, Market Approach |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |
Other investments, at fair value | $ 123,000 |

X
- Definition The estimated remaining time to maturity of the CLO structure (expressed as a number of years). + References No definition available. + Details
Name: | axs_FairValueInputsEstimatedMaturityDate
Namespace Prefix: | axs_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 35 -Paragraph 54B -URI https://asc.fasb.org/extlink&oid=126972413&loc=SL7495116-110257 + Details
Name: | us-gaap_AlternativeInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure alternative investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_AlternativeInvestmentMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
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_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_CollateralizedLoanObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_ValuationTechniqueDiscountedCashFlowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDefaultRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputLossSeverityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=axs_MeasurementInputCollateralSpreadsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=axs_OtherPrivatelyHeldInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=axs_MeasurementInputLossAbsorptionYieldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=us-gaap_MarketApproachValuationTechniqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |