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v2.4.1.9

SEGMENT INFORMATION (DETAILS 3) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned | $ 958,517 us-gaap_PremiumsEarnedNet | $ 966,138 us-gaap_PremiumsEarnedNet | $ 1,000,400 us-gaap_PremiumsEarnedNet | $ 945,949 us-gaap_PremiumsEarnedNet | $ 941,911 us-gaap_PremiumsEarnedNet | $ 945,242 us-gaap_PremiumsEarnedNet | $ 945,873 us-gaap_PremiumsEarnedNet | $ 874,039 us-gaap_PremiumsEarnedNet | $ 3,870,999 us-gaap_PremiumsEarnedNet | $ 3,707,065 us-gaap_PremiumsEarnedNet | $ 3,415,463 us-gaap_PremiumsEarnedNet
Insurance [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 1,830,544 us-gaap_PremiumsEarnedNet / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 1,722,762 us-gaap_PremiumsEarnedNet / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 1,558,058 us-gaap_PremiumsEarnedNet / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Insurance [Member] | Property [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 444,197 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_PropertyMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 462,364 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_PropertyMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 408,943 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_PropertyMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Insurance [Member] | Marine [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 178,229 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_MarineMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 179,057 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_MarineMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 171,165 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_MarineMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Insurance [Member] | Terrorism [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 35,876 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_TerrorismMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 39,298 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_TerrorismMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 38,605 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_TerrorismMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Insurance [Member] | Aviation [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 41,192 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AviationMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 48,489 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AviationMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 60,363 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AviationMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Insurance [Member] | Credit and political risk [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 63,095 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CreditAndPoliticalRiskMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 68,192 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CreditAndPoliticalRiskMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 87,103 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CreditAndPoliticalRiskMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Insurance [Member] | Professional lines [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 629,365 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_ProfessionalLinesMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 586,200 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_ProfessionalLinesMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 563,500 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_ProfessionalLinesMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Insurance [Member] | Liability [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 146,819 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_LiabilityLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 110,623 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_LiabilityLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 86,873 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_LiabilityLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Insurance [Member] | Accident and health [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 291,771 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AccidentAndHealthMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 228,539 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AccidentAndHealthMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember | 141,506 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AccidentAndHealthMember / us-gaap_StatementBusinessSegmentsAxis = axs_InsuranceMember
Reinsurance [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 2,040,455 us-gaap_PremiumsEarnedNet / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 1,984,303 us-gaap_PremiumsEarnedNet / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 1,857,405 us-gaap_PremiumsEarnedNet / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Catastrophe [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 325,307 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CatastropheReinsuranceMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 380,199 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CatastropheReinsuranceMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 375,088 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CatastropheReinsuranceMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Property [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 312,443 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_PropertyMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 350,970 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_PropertyMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 351,470 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_PropertyMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Professional lines [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 336,058 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_ProfessionalLinesMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 304,754 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_ProfessionalLinesMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 297,726 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_ProfessionalLinesMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Credit and surety [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 263,013 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CreditAndBondMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 279,943 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CreditAndBondMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 277,185 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_CreditAndBondMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Motor [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 268,678 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_MotorMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 221,844 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_MotorMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 237,006 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_MotorMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Liability [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 289,223 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_LiabilityLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 234,736 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_LiabilityLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 220,874 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_LiabilityLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Agriculture [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 164,628 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AgricultureLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 126,490 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AgricultureLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 17,116 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_AgricultureLineMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Engineering [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | 61,143 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_EngineeringMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 66,243 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_EngineeringMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | 68,402 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_EngineeringMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember
Reinsurance [Member] | Other [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net premiums earned |  |  |  |  |  |  |  |  | $ 19,962 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_OtherLinesOfBusinessMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | $ 19,124 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_OtherLinesOfBusinessMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember | $ 12,538 us-gaap_PremiumsEarnedNet / us-gaap_ProductOrServiceAxis = axs_OtherLinesOfBusinessMember / us-gaap_StatementBusinessSegmentsAxis = axs_ReinsuranceMember

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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 7 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(c)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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