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Reinsurance (Details) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 USD ($) item | Dec. 31, 2021 USD ($) item
Ceded Credit Risk [Line Items] |  |
Net ceded reinsurance recoverables | $ 14,082.2 | $ 1,186.5
Reinsurance deposit receivable | 8,810.8 |
Reinsurer Concentration Risk | Net ceded reinsurance recoverables | Five largest ceded reinsurers |  |
Ceded Credit Risk [Line Items] |  |
Net ceded reinsurance recoverables | $ 13,588.3 | $ 578.0
Concentration risk percentage | 99.80% | 95.50%
Number of largest ceded reinsurers | item | 5 | 5

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- Definition Amount, after valuation allowance, of recoverable amounts under reinsurance contracts including premium paid 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, that have been ceded to other entities. + References No definition available. + Details
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- Definition The unaccreted deposit balance for reinsurance agreements for which we use the deposit method of accounting. + References No definition available. + Details
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- Definition The number of ceded reinsurers for which the amount of net ceded reinsurance recoverables related to claims received is disclosed as a concentration of credit risk. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
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- Details
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- Details
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