Segment Information - Narrative (Details) - Business	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Number of businesses	3
Gross Written Premiums \| Geographic Concentration Risk \| Michigan, Texas, Oklahoma and Florida
Segment Reporting Information [Line Items]
Concentration risk	52.90%	53.90%

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 825
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 275
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