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SUBSEQUENT EVENTS (DETAILS) - Scenario, Forecast [Member] - PartnerRe [Member] - $ / shares	Jul. 15, 2015	May. 03, 2015
Subsequent Event [Line Items]
Special Dividend		$ 11.50
Subsequent Event [Member]
Subsequent Event [Line Items]
Special Dividend	$ 17.50
Preferred Shares, Basis Points Increase	1.00%

X

- Definition

Preferred Shares, Basis Points Increase

+ References

No definition available.

+ Details

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Namespace Prefix:	axs_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

One-time amalgamation related special dividend.

+ References

No definition available.

+ Details

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Namespace Prefix:	axs_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=axs_PartnerReMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
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Period Type: