v2.4.0.6

DERIVATIVE INSTRUMENTS (DETAILS 4) (USD $) In Millions, unless otherwise specified	Dec. 31, 2009
DERIVATIVE INSTRUMENTS [Abstract]
Face value of asset back note collateralized by a portfolio of life settlement contracts	$ 400
Term (in years) of asset back note collateralized by a portfolio of life settlement contracts	10

X

- Definition

Face value of an insured asset-backed note collateralized by a portfolio of life settlement contracts and cash.

+ References

No definition available.

+ Details

Name:	axs_InsuredAssetBackedSecurityCollateralizedByLifeSettlementContractsFaceValue
Namespace Prefix:	axs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Term (in years) of an insured asset-backed note collateralized by a portfolio of life settlement contracts and cash.

+ References

No definition available.

+ Details

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

X

- Details

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