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SUBSEQUENT EVENTS (Details) - Subsequent Event - USD ($) | Apr. 01, 2019 | Apr. 03, 2019
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Senior Notes | Senior Notes Due 2019 Axis Specialty Finance PLC 2014 |  |
Subsequent Event [Line Items] |  |
Maturities of senior debt | $ 250,000,000 |
Debt instrument, interest rate, stated percentage | 2.65% |
Senior Notes | Senior Notes Due 2045 Axis Specialty Finance PLC 2014 |  |
Subsequent Event [Line Items] |  |
Debt instrument, interest rate, stated percentage |  | 5.15%
Debt instrument, face amount |  | $ 250,000,000
AXIS Specialty Finance PLC |  |
Subsequent Event [Line Items] |  |
Ownership percentage by parent | 100.00% |

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