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Loss And Loss Adjustment Expense Reserves - Average Annual Percentage Payout of Incurred Claims by Age (Details) | Dec. 31, 2024
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Property insurance product line, automobile |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Short-duration insurance contracts, historical claims duration, year one | 57.80%
Short-duration insurance contracts, historical claims duration, year two | 19.60%
Short-duration insurance contracts, historical claims duration, year three | 9.70%
Short-duration insurance contracts, historical claims duration, year four | 6.00%
Short-duration insurance contracts, historical claims duration, year five | 3.10%
Short-duration insurance contracts, historical claims duration, year six | 1.50%
Short-duration insurance contracts, historical claims duration, year seven | 0.70%
Short-duration insurance contracts, historical claims duration, year eight | 0.30%
Short-duration insurance contracts, historical claims duration, year nine | 0.10%
Short-duration insurance contracts, historical claims duration, year ten | 0.00%
Property insurance product line, homeowners' |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Short-duration insurance contracts, historical claims duration, year one | 66.30%
Short-duration insurance contracts, historical claims duration, year two | 23.00%
Short-duration insurance contracts, historical claims duration, year three | 4.30%
Short-duration insurance contracts, historical claims duration, year four | 2.40%
Short-duration insurance contracts, historical claims duration, year five | 1.50%
Short-duration insurance contracts, historical claims duration, year six | 0.90%
Short-duration insurance contracts, historical claims duration, year seven | 0.30%
Short-duration insurance contracts, historical claims duration, year eight | 0.30%
Short-duration insurance contracts, historical claims duration, year nine | 0.10%
Short-duration insurance contracts, historical claims duration, year ten | 0.00%
Property insurance product line, commercial property |
Short-duration Insurance Contracts, Historical Claims Duration [Line Items] |
Short-duration insurance contracts, historical claims duration, year one | 31.30%
Short-duration insurance contracts, historical claims duration, year two | 17.50%
Short-duration insurance contracts, historical claims duration, year three | 10.90%
Short-duration insurance contracts, historical claims duration, year four | 10.90%
Short-duration insurance contracts, historical claims duration, year five | 5.80%
Short-duration insurance contracts, historical claims duration, year six | 8.00%
Short-duration insurance contracts, historical claims duration, year seven | 6.60%
Short-duration insurance contracts, historical claims duration, year eight | 2.00%
Short-duration insurance contracts, historical claims duration, year nine | 2.00%
Short-duration insurance contracts, historical claims duration, year ten | 0.20%

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- Definition Percentage of average annual payout, after reinsurance, in the eighth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the fifth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the fourth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the ninth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the first year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the sixth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
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- Definition Percentage of average annual payout, after reinsurance, in the tenth year after a claim is incurred, beginning with the earliest accident year disclosed for short-duration insurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9F -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9F Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4G + Details
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