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Reinsurance (Tables)

12 Months Ended

Dec. 31, 2024

Reinsurance Disclosures [Abstract]

Summary of Assumed and Ceded Reinsurance on Premiums Written, Premiums Earned and Insurance Losses and Loss Adjustment Expenses

The effect of assumed and ceded reinsurance on premiums written, premiums earned and losses and loss adjustment expenses for the twelve months ended December 31, 2024, 2023 and 2022 was as follows:

						Twelve Months Ended December 31,
						2024						2023						2022
						($ in millions)
Premiums written:
Insurance						$	2,723.5					$	2,446.6					$	2,531.7
Reinsurance						1,885.8						1,521.0						1,807.0
Ceded						(1,666.7)						(1,385.7)						(1,442.7)
Net written premiums						$	2,942.6					$	2,581.9					$	2,896.0
Premiums earned:
Insurance						$	2,565.7					$	2,444.8					$	2,370.8
Reinsurance						1,822.1						1,562.0						1,617.2
Ceded						(1,498.1)						(1,392.3)						(1,299.3)
Net earned premiums						$	2,889.7					$	2,614.5					$	2,688.7
Losses and loss adjustment expenses:
Insurance						$	1,759.1					$	1,644.5					$	1,574.2
Reinsurance						915.8						707.2						939.5
Ceded						(957.1)						(798.7)						(833.7)
Losses and loss adjustment expenses						$	1,717.8					$	1,553.0					$	1,680.0

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- Definition

Tabular disclosure of the effects of reinsurance, for example, but not limited to, disclosure of direct, assumed, and ceded insurance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 605
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479032/944-605-50-1

+ Details

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- References

No definition available.

+ Details

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