Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill by reporting segment for the year ended December 31, 2024 were as follows:

($ in millions)	Property & Casualty		Life & Retirement		Supplemental & Group Benefits		Total
Balance as of January 1, 2022
Goodwill	$	9.5	$	48.0	$	19.6	$	77.1
Accumulated impairment losses	—		(33.6)		—		(33.6)
Total goodwill, net	9.5		14.4		19.6		43.5
Acquisitions	—		—		12.8		12.8
Impairments	—		(2.0)		—		(2.0)
Balance as of December 31, 2022
Goodwill	9.5		48.0		32.4		89.9
Accumulated impairment losses	—		(35.6)		—		(35.6)
Total goodwill, net	9.5		12.4		32.4		54.3
Acquisitions	—		—		—		—
Impairments	—		—		—		—
Balance as of December 31, 2023
Goodwill	9.5		48.0		32.4		89.9
Accumulated impairment losses	—		(35.6)		—		(35.6)
Total goodwill, net	9.5		12.4		32.4		54.3
Acquisitions	—		—		—		—
Impairments	—		—		—		—
Balance as of December 31, 2024
Goodwill	9.5		48.0		32.4		89.9
Accumulated impairment losses	—		(35.6)		—		(35.6)
Total goodwill, net	$	9.5	$	12.4	$	32.4	$	54.3

Schedule of Finite-Lived Intangible Assets

As of December 31, 2024 the outstanding amounts of definite-lived intangible assets subject to amortization were as follows:

($ in millions)	Weighted Average
	Useful Life (in Years)
At inception:
Value of business acquired	28	$	100.1
Value of distribution acquired	17	54.0
Value of agency relationships	14	17.0
Value of customer relationships	10	59.9
Total	20	231.0
Accumulated amortization and impairments:
Value of business acquired		(40.6)
Value of distribution acquired		(20.5)
Value of agency relationships		(11.2)
Value of customer relationships		(16.3)
Total		(88.6)
Net intangible assets subject to amortization:		$	142.4

Schedule of Future Amortization Expense

Estimated future amortization of the Company's definite-lived intangible assets were as follows:

($ in millions)
Year Ending December 31,
2025	$	14.3
2026	14.2
2027	14.1
2028	14.1
2029	14.1
Thereafter	71.6
Total	$	142.4

Schedule of Indefinite-Lived Intangible Assets

Indefinite-lived intangible assets (not subject to amortization) as of December 31, 2024 were as follows:

($ in millions)	Trade Names		State Licenses		Total
Balance as of January 1, 2022	$	7.9	$	2.9	$	10.8
Impairments	(0.3)		—		(0.3)
Acquisitions	—		2.9		2.9
Balance as of December 31, 2022	7.6		5.8		13.4
Impairments	—		—		—
Acquisitions	—		—		—
Balance as of December 31, 2023	7.6		5.8		13.4
Impairments	—		—		—
Acquisitions	—		—		—
Balance as of December 31, 2024	$	7.6	$	5.8	$	13.4