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Equity - Dividend Restrictions, Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2025
Class of Stock [Line Items] |  |
Percent of insurer's policyholder surplus available for dividends | 10.00% |
Statutory Dividend Payment Restrictions Disclosure | There are no current restrictions on HIG Holding Company's ability to pay dividends to its stockholders. |
HLA |  |
Class of Stock [Line Items] |  |
Proceeds from Dividends Received | $ 608 |
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments with Regulatory Approval | 592 |
HLA | Scenario, Forecast |  |
Class of Stock [Line Items] |  |
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments with Regulatory Approval |  | $ 590
Mutual Fund [Member] |  |
Class of Stock [Line Items] |  |
Proceeds from Dividends Received | 136 |
Other Non-Insurance Subsidiaries [Member] |  |
Class of Stock [Line Items] |  |
Proceeds from Dividends Received | 31 |
P&C Subsidiaries |  |
Class of Stock [Line Items] |  |
Proceeds from Dividends Received | 1,500 |
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments with Regulatory Approval | 2,000 |
P&C Subsidiaries | Scenario, Forecast |  |
Class of Stock [Line Items] |  |
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments with Regulatory Approval |  | $ 1,700
P&C Runoff Subsidiaries |  |
Class of Stock [Line Items] |  |
Proceeds from Dividends Received | 75 |
Harford Holdings, Inc. [Member] |  |
Class of Stock [Line Items] |  |
Proceeds from Dividends Received | $ 50 |

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