Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2022

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, 2022 were as follows:

($ in millions)	Property & Casualty		Life & Retirement		Supplemental & Group Benefits		Total
Balance as of January 1, 2020
Goodwill	$	9.5	$	48.0	$	19.6	$	77.1
Accumulated impairment losses	—		(28.0)		—		(28.0)
Total goodwill, net	9.5		20.0		19.6		49.1
Acquisitions	—		—		—		—
Impairments	—		(5.6)		—		(5.6)
Balance as of December 31, 2020
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	—		—		—		—
Impairments	—		—		—		—
Balance as of December 31, 2021
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

Summary of Finite-Lived Intangible Assets

As of December 31, 2022 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		(29.6)
Value of distribution acquired		(14.7)
Value of agency relationships		(8.2)
Value of customer relationships		(6.7)
Total		(59.2)
Net intangible assets subject to amortization:		$	171.8

Future Amortization Expense

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

($ in millions)
Year Ending December 31,
2023	$	14.8
2024	14.6
2025	14.4
2026	14.3
2027	14.2
Thereafter	99.5
Total	$	171.8

Summary of Indefinite-Lived Intangible Assets

Indefinite-lived intangible assets (not subject to amortization) as of December 31, 2022 were as follows:

($ in millions)	December 31, 2021		Impairments		Acquisitions		December 31, 2022
Trade names	$	7.9	$	(0.3)	$	—	$	7.6
State licenses	2.9		—		2.9		5.8
Total	$	10.8	$	(0.3)	$	2.9	$	13.4