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INVESTMENTS - Reverse Repurchase Agreements (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
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Investments, Debt and Equity Securities [Abstract] |  |
Value of reverse repurchase agreements | $ 45 | $ 12
Minimum required collateral for reverse repurchase agreements, expressed as a percentage of loan principal (as a percent) | 102.00% |

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- Definition Minimum value of securities received as collateral against securities purchased under agreement to resell, expressed as a percentage of loan principal. + References No definition available. + Details
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Namespace Prefix: | axs_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
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- References No definition available. + Details
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- Definition The carrying value of securities purchased to be resold in reverse repurchase transactions as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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