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Property and Casualty Insurance Reserves - Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability (Details) $ in Millions | Dec. 31, 2024 USD ($)
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Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | $ 2,399.4
Reinsurance Recoverables on Unpaid Losses and Allocated LAE | 24.3
Unallocated LAE | 197.6
Specialty Personal Automobile Insurance—Liability |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 1,449.7
Reinsurance Recoverables on Unpaid Losses and Allocated LAE | 5.7
Specialty Personal Automobile Insurance—Liability | Variable Interest Entity, Primary Beneficiary |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 8.8
Specialty Personal Automobile Insurance—Physical Damage |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 26.4
Specialty Personal Automobile Insurance—Physical Damage | Variable Interest Entity, Primary Beneficiary |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 0.6
Commercial Automobile Insurance—Liability |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 672.4
Commercial Automobile Insurance—Physical Damage |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 17.1
Preferred Personal Automobile Insurance—Liability |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 159.6
Reinsurance Recoverables on Unpaid Losses and Allocated LAE | 16.9
Preferred Personal Automobile Insurance—Physical Damage |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | (1.2)
Homeowners Insurance |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 39.6
Reinsurance Recoverables on Unpaid Losses and Allocated LAE | 0.0
Other |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Net of Reinsurance | 35.8
Reinsurance Recoverables on Unpaid Losses and Allocated LAE | 1.7
Property and Casualty Insurance Product Line |
Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] |
Property and Casualty Insurance Reserves, Gross of Reinsurance | $ 2,621.3

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- Definition Liability for Claims and Claims Adjustment Expense Including Variable Interest Entity + References No definition available. + Details
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- Definition Amount, after valuation allowance, recoverable under reinsurance contracts for losses reported to the ceding insurer but not yet paid and amounts expected for incurred losses and settlement expenses, which have not yet been reported to the ceding insurer. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-7 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (cc) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4C Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477363/944-310-50-2 Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-5 Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477409/944-310-45-6 + Details
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- Definition Undiscounted amount, after reinsurance, of the liability for unpaid claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 9E -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-9E Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 4B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-4B + Details
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