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Reserve for Unpaid Losses and Loss Adjustment Expenses (Tables) | 3 Months Ended
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Dec. 31, 2024
Liability for Unpaid Claims and Claims Adjustment Expense, Activity in Liability [Abstract] |
Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] |
Unfavorable (Favorable) Prior Accident Year Development | For the three months ended December 31, 2024
Workers’ compensation | $ | (70) |
Workers’ compensation discount accretion | 10 |
General liability | 130 |
Marine | — |
Package business | — |
Commercial property | — |
Professional liability | (20) |
Bond | (34) |
Assumed reinsurance | — |
Automobile liability - Commercial Lines | 21 |
Automobile liability - Personal Lines | (17) |
Homeowners | (13) |
Net asbestos and environmental ("A&E") reserves | 141 |
Catastrophes | (49) |
Uncollectible reinsurance | (19) |
Other reserve re-estimates, net | 17 |
Prior accident year development, including full benefit for the adverse development cover ("ADC") cession | 97 |
Change in deferred gain on retroactive reinsurance included in other liabilities [1] | 4 |
Total prior accident year development | $ | 101 |
[1] Change in deferred gain on retroactive reinsurance for the three months ended December 31, 2024, included a benefit for amortization of the Navigators ADC deferred gain of $58. The change in deferred gain for the three months ended December 31, 2024, also included $62 of adverse development on A&E reserves in excess of ceded premium paid.

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- References No definition available. + Details
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- Definition Tabular disclosure of the activity in the reserve for settling insured claims and expenses incurred in the claims settlement process for the period. The estimated liability includes the amount of money that will be required for future payments of (a) claims that have been reported to the insurer, (b) claims related to insured events that have occurred but that have not been reported to the insurer as of the date the liability is estimated, and (c) claim adjustment expenses. Claim adjustment expenses include costs incurred in the claim settlement process such as legal fees; outside adjuster fees; and costs to record, process, and adjust claims. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 + Details
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