XML 69 R51.htm IDEA: XBRL DOCUMENT
v2.4.1.9

RESERVE FOR LOSSES AND LOSS EXPENSES (DETAILS 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Net Favorable Prior Year Reserve Development [Line Items] |  |
Net favorable prior year reserve development | $ 50,051 us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense | $ 43,493 us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
Insurance [Member] |  |
Net Favorable Prior Year Reserve Development [Line Items] |  |
Net favorable prior year reserve development | 3,361 us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 11,608 us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Reinsurance [Member] |  |
Net Favorable Prior Year Reserve Development [Line Items] |  |
Net favorable prior year reserve development | $ 46,690 us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | $ 31,885 us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember

X
- Details
Name: | axs_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsBySegmentLineItems
Namespace Prefix: | axs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense for claims incurred in prior reporting periods and related claims settlement costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-18) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e575016-122915 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 18 -Article 12 + Details
Name: | us-gaap_SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=axs_InsuranceMember
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: |