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Segment Information (Tables)

6 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Reconciliation of operating results by reportable segment

The following tables present the Company's operating results by reportable segment:

			Three Months Ended June 30,
			2024																		2023
			Property & Casualty						Other						Total						Property & Casualty						Other						Total
			(Amounts in millions)
Net premiums earned			$	1,228.7					$	7.3					$	1,236.0					$	1,027.3					$	7.2					$	1,034.5
Less:
Losses and loss adjustment expenses			932.4						4.3						936.7						893.9						3.9						897.8
Underwriting expenses			282.0						3.4						285.4						237.4						3.8						241.2
Underwriting gain (loss)			14.3						(0.4)						13.9						(104.0)						(0.5)						(104.5)
Investment income															69.0																		58.4
Net realized investment gains (losses)															2.9																		(19.8)
Other (loss) income															(2.9)																		10.2
Interest expense															(7.8)																		(5.5)
Pre-tax income (loss)															$	75.1																	$	(61.2)
Net income (loss)															$	62.6																	$	(41.5)

			Six Months Ended June 30,
			2024																		2023
			Property & Casualty						Other						Total						Property & Casualty						Other						Total
			(Amounts in millions)
Net premiums earned			$	2,388.1					$	14.6					$	2,402.7					$	2,024.8					$	14.4					$	2,039.2
Less:
Losses and loss adjustment expenses			1,832.4						8.3						1,840.7						1,819.7						7.6						1,827.3
Underwriting expenses			551.3						7.2						558.5						468.0						7.3						475.3
Underwriting gain (loss)			4.4						(0.9)						3.5						(262.9)						(0.5)						(263.4)
Investment income															134.0																		110.3
Net realized investment gains															41.1																		29.2
Other income															1.3																		11.1
Interest expense															(15.6)																		(10.5)
Pre-tax income (loss)															$	164.3																	$	(123.3)
Net income (loss)															$	136.0																	$	(86.8)

Schedule direct premiums attributable to segment

The following tables present the Company’s net premiums earned and direct premiums written by reportable segment and line of insurance business:

			Three Months Ended June 30,
			2024																		2023
			Property & Casualty						Other						Total						Property & Casualty						Other						Total
			(Amounts in millions)
Private passenger automobile			$	799.6					$	—					$	799.6					$	674.7					$	—					$	674.7
Homeowners			283.6						—						283.6						233.9						—						233.9
Commercial automobile			94.2						—						94.2						72.1						—						72.1
Other			51.3						7.3						58.6						46.6						7.2						53.8
Net premiums earned			$	1,228.7					$	7.3					$	1,236.0					$	1,027.3					$	7.2					$	1,034.5
Private passenger automobile			$	847.6					$	—					$	847.6					$	698.5					$	—					$	698.5
Homeowners			361.9						—						361.9						294.5						—						294.5
Commercial automobile			98.8						—						98.8						82.7						—						82.7
Other			72.2						6.8						79.0						56.5						7.3						63.8
Direct premiums written			$	1,380.5					$	6.8					$	1,387.3					$	1,132.2					$	7.3					$	1,139.5

			Six Months Ended June 30,
			2024																		2023
			Property & Casualty						Other						Total						Property & Casualty						Other						Total
			(Amounts in millions)
Private passenger automobile			$	1,553.9					$	—					$	1,553.9					$	1,335.3					$	—					$	1,335.3
Homeowners			550.5						—						550.5						456.4						—						456.4
Commercial automobile			183.4						—						183.4						141.2						—						141.2
Other			100.3						14.6						114.9						91.9						14.4						106.3
Net premiums earned			$	2,388.1					$	14.6					$	2,402.7					$	2,024.8					$	14.4					$	2,039.2
Private passenger automobile			$	1,673.1					$	—					$	1,673.1					$	1,332.8					$	—					$	1,332.8
Homeowners			664.0						—						664.0						536.1						—						536.1
Commercial automobile			202.8						—						202.8						162.7						—						162.7
Other			135.1						13.4						148.5						112.9						13.5						126.4
Direct premiums written			$	2,675.0					$	13.4					$	2,688.4					$	2,144.5					$	13.5					$	2,158.0

X

- Definition

Disclosure of direct premium written by line of business.

+ References

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- Definition

Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-31

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

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