XML 155 R130.htm IDEA: XBRL DOCUMENT
v3.8.0.1

SCHEDULE IV - SUPPLEMENTARY REINSURANCE INFORMATION (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Supplementary Insurance Information [Line Items] |  |  |
DIRECT GROSS PREMIUM | $ 2,423,126 | $ 2,112,178 | $ 2,031,565
CEDED TO OTHER COMPANIES | 1,529,130 | 1,217,234 | 929,064
ASSUMED FROM OTHER COMPANIES | 3,133,147 | 2,858,030 | 2,572,165
NET AMOUNT | $ 4,027,143 | $ 3,752,974 | $ 3,674,666
PERCENTAGE OF AMOUNT ASSUMED TO NET | 77.80% | 76.20% | 70.00%
Property and Casualty |  |  |
Supplementary Insurance Information [Line Items] |  |  |
DIRECT GROSS PREMIUM | $ 2,228,022 | $ 1,975,497 | $ 1,901,757
CEDED TO OTHER COMPANIES | 1,523,662 | 1,215,775 | 910,917
ASSUMED FROM OTHER COMPANIES | 2,814,173 | 2,564,606 | 2,350,680
NET AMOUNT | $ 3,518,533 | $ 3,324,328 | $ 3,341,520
PERCENTAGE OF AMOUNT ASSUMED TO NET | 80.00% | 77.10% | 70.30%
Accident and Health |  |  |
Supplementary Insurance Information [Line Items] |  |  |
DIRECT GROSS PREMIUM | $ 195,104 | $ 136,681 | $ 129,808
CEDED TO OTHER COMPANIES | 5,468 | 1,459 | 18,147
ASSUMED FROM OTHER COMPANIES | 318,974 | 293,424 | 221,485
NET AMOUNT | $ 508,610 | $ 428,646 | $ 333,146
PERCENTAGE OF AMOUNT ASSUMED TO NET | 62.70% | 68.50% | 66.50%

X
- Definition Percentage of assumed premiums written by the entity to net premiums written. + References No definition available. + Details
Name: | axs_PremiumsPercentageAssumedToNetWritten
Namespace Prefix: | axs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of written premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(2),(c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
Name: | us-gaap_AssumedPremiumsWritten
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of written premiums ceded to other entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
Name: | us-gaap_CededPremiumsWritten
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before premiums ceded to other entities and premiums assumed by the entity, of premiums written. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
Name: | us-gaap_DirectPremiumsWritten
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_SupplementaryInsuranceInformationBySegmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of actual written premiums, including, as applicable, premiums from reinsurance assumed and net of premiums on reinsurance ceded. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915 + Details
Name: | us-gaap_SupplementaryInsuranceInformationPremiumsWritten
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ProductOrServiceAxis=us-gaap_PropertyLiabilityAndCasualtyInsuranceSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ProductOrServiceAxis=us-gaap_AccidentAndHealthInsuranceSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |