XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.5.0.2

RESERVE FOR LOSSES AND LOSS EXPENSES (DETAILS 2) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Net Favorable Prior Year Reserve Development [Line Items] |  |  |  |
Net favorable prior year reserve development | $ 77,719 | $ 64,613 | $ 148,113 | $ 120,679
Insurance [Member] |  |  |  |
Net Favorable Prior Year Reserve Development [Line Items] |  |  |  |
Net favorable prior year reserve development | 20,066 | 15,421 | 22,493 | 18,783
Reinsurance [Member] |  |  |  |
Net Favorable Prior Year Reserve Development [Line Items] |  |  |  |
Net favorable prior year reserve development | $ 57,653 | $ 49,192 | $ 125,620 | $ 101,896

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: | axs_LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsPriorYearsBySegmentLineItems
Namespace Prefix: | axs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expense (reversal 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 + 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: |