XML 119 R95.htm IDEA: XBRL DOCUMENT
v3.10.0.1

RESERVE FOR LOSSES AND LOSS EXPENSES - Reconciliation of development tables to consolidated balance sheet (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | $ 8,676,295 |  |  |
Reinsurance recoverable on unpaid claims | 3,501,669 |  |  |
Gross outstanding liabilities | 12,177,964 |  |  |
Unallocated claims adjustment expenses | 145,768 |  |  |
Foreign exchange and other | 53,695 |  |  |
(Ceded)/assumed reserves related to retroactive transactions | (96,658) |  |  |
Reserve for losses and loss expenses | 12,280,769 | $ 12,997,553 | $ 9,697,827 | $ 9,646,285
Insurance |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 3,540,908 |  |  |
Reinsurance recoverable on unpaid claims | 2,692,252 |  |  |
Gross outstanding liabilities | 6,233,160 |  |  |
Insurance | Property and other |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 771,659 |  |  |
Reinsurance recoverable on unpaid claims | 482,207 |  |  |
Gross outstanding liabilities | 1,253,866 |  |  |
Insurance | Marine |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 340,668 |  |  |
Reinsurance recoverable on unpaid claims | 187,164 |  |  |
Gross outstanding liabilities | 527,832 |  |  |
Insurance | Aviation |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 91,404 |  |  |
Reinsurance recoverable on unpaid claims | 14,310 |  |  |
Gross outstanding liabilities | 105,714 |  |  |
Insurance | Credit and political risk |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 99,011 |  |  |
Reinsurance recoverable on unpaid claims | 24,536 |  |  |
Gross outstanding liabilities | 123,547 |  |  |
Insurance | Professional lines |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 1,587,696 |  |  |
Reinsurance recoverable on unpaid claims | 1,005,316 |  |  |
Gross outstanding liabilities | 2,593,012 |  |  |
Insurance | Liability |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 650,470 |  |  |
Reinsurance recoverable on unpaid claims | 978,719 |  |  |
Gross outstanding liabilities | 1,629,189 |  |  |
Reinsurance |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 5,135,387 |  |  |
Reinsurance recoverable on unpaid claims | 809,417 |  |  |
Gross outstanding liabilities | 5,944,804 |  |  |
Reinsurance | Property and other |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 1,393,776 |  |  |
Reinsurance recoverable on unpaid claims | 435,671 |  |  |
Gross outstanding liabilities | 1,829,447 |  |  |
Reinsurance | Credit and surety |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 325,491 |  |  |
Reinsurance recoverable on unpaid claims | 36,180 |  |  |
Gross outstanding liabilities | 361,671 |  |  |
Reinsurance | Professional lines |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 1,039,085 |  |  |
Reinsurance recoverable on unpaid claims | 81,608 |  |  |
Gross outstanding liabilities | 1,120,693 |  |  |
Reinsurance | Motor |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 1,172,467 |  |  |
Reinsurance recoverable on unpaid claims | 128,575 |  |  |
Gross outstanding liabilities | 1,301,042 |  |  |
Reinsurance | Liability |  |  |  |
Claims Development [Line Items] |  |  |  |
Net outstanding liabilities | 1,204,568 |  |  |
Reinsurance recoverable on unpaid claims | 127,383 |  |  |
Gross outstanding liabilities | $ 1,331,951 |  |  |

X
- Definition Undiscounted amount, of the reinsurance recoverable for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes reinsurance recoverable for unallocated claim adjustment expense. + References No definition available. + Details
Name: | axs_ShortdurationInsuranceContractsLiabilityforUnpaidClaimsandAllocatedClaimAdjustmentExpenseCeded
Namespace Prefix: | axs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Undiscounted amount, before reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References No definition available. + Details
Name: | axs_ShortdurationInsuranceContractsLiabilityforUnpaidClaimsandAllocatedClaimAdjustmentExpenseGross
Namespace Prefix: | axs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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_ClaimsDevelopmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (cc) -URI http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437 + Details
Name: | us-gaap_LiabilityForClaimsAndClaimsAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=99384497&loc=SL65671315-158438 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=99384497&loc=SL65671311-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of reconciling item for the reconciliation of the liability in the disclosure of claims development (in excess of) less than the liability for unpaid claims and claims adjustment expense for short-duration insurance contracts, classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=99384497&loc=SL65671315-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of accumulated increase (decrease) to the liability for unpaid claims and claim adjustment expenses used for claim development from a foreign exchange rate (gain) loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=99384497&loc=SL65671315-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedForeignExchange
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of liability for unallocated claim adjustment expense for short-duration insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=99384497&loc=SL65671315-158438 + Details
Name: | us-gaap_ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=axs_InsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=axs_PropertyandOtherReserveClassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=axs_MarineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=axs_AviationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=axs_CreditAndPoliticalRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=axs_ProfessionalLinesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=axs_LiabilityLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=axs_ReinsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=axs_CreditandSuretyBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=axs_MotorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |