Share-Based Compensation Arrangement By Share-Based Payment, Vesting Percentage Of Target

No definition available.

Name:	axs_ShareBasedCompensationArrangementByShareBasedPaymentVestingPercentageOfTarget
Namespace Prefix:	axs_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Trading Days Proceeding And Performance Period

+ References

No definition available.

+ Details

Name:	axs_TradingDaysProceedingAndPerformancePeriod
Namespace Prefix:	axs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GranteeStatusAxis=axs_ShareBasedPaymentArrangementSeniorLeadershipMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

SHARE-BASED COMPENSATION - Narrative (Details) - trading_day	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Trading days proceeding and performance period	10	10
Performance Vesting Restricted Stock Units
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting period	3 years
Performance Vesting Restricted Stock Units \| Minimum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting as a percentage of target (percent)	0.00%
Performance Vesting Restricted Stock Units \| Maximum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting as a percentage of target (percent)	200.00%
Performance Vesting Restricted Stock Units \| Share-Based Payment Arrangement, Senior Leadership \| Share-Based Payment Arrangement, Tranche One [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting period	1 year
Number of awards vesting upon achievement of performance goal (percent)	50.00%
Performance Vesting Restricted Stock Units \| Share-Based Payment Arrangement, Senior Leadership \| Share-Based Payment Arrangement, Tranche Two [Member]
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting period	3 years
Number of awards vesting upon achievement of performance goal (percent)	50.00%
Performance Vesting Restricted Stock Units \| Share-Based Payment Arrangement, Senior Leadership \| Share-Based Payment Arrangement, Tranche Two [Member] \| Minimum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting as a percentage of target (percent)	0.00%
Performance Vesting Restricted Stock Units \| Share-Based Payment Arrangement, Senior Leadership \| Share-Based Payment Arrangement, Tranche Two [Member] \| Maximum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting as a percentage of target (percent)	200.00%