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Reinsurance (Details) $ in Millions | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
--- | --- | ---
Insurance [Line Items] |  |
Letters of Credit Outstanding, Amount | $ 131 |
Deferred Ceded Premiums And Reinsurance Recoverables | 398 |
Reinsurance Payable | $ 90 | $ 39
Percentage of Ceded Reinsurance Recoverable Represented by Top Three | 74.00% |
Reinsurance Recoverables, Gross | $ 195 |
Net unsecured reinsurance recoverable | 128 |
Reinsurance Recoverable, Gross, All Other | 50 |
Unsecured Reinsurance Recoverable, All Other | 21 |
Reinsurance Recoverable Credit Exposure | 128 | 60
Uncollateralized Credit Exposure Supoorted by Unlimited Uncapped Indemnity | $ 44 | $ 45
Number of Reinsurers Covering Majority | 3 |
QBE Insurance Corporation | Property and Casualty, Commercial Insurance |  |
Insurance [Line Items] |  |
Reinsurance Recoverables, Gross | $ 38 |
Net unsecured reinsurance recoverable | 38 |
Assured Guaranty Re Ltd [Member] | Financial Guarantee |  |
Insurance [Line Items] |  |
Reinsurance Recoverables, Gross | 25 |
Net unsecured reinsurance recoverable | 0 |
General Reinsurance Company | Property and Casualty, Commercial Insurance |  |
Insurance [Line Items] |  |
Reinsurance Recoverables, Gross | 81 |
Net unsecured reinsurance recoverable | $ 69 |

X
- Definition Includes the unexpired portion of financial guarantee premiums ceded on policies as of the balance sheet date and reinsurance recoverables on claims or claim adjustment expense paid by the ceding insurer. + References No definition available. + Details
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- Definition Amount before valuation allowance recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479616/944-310-45-5 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-14 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7A -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-7A + Details
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