Segment Information (Tables)

12 Months Ended

Dec. 31, 2022

Segment Reporting [Abstract]

Summary of Financial Information for these Segments

Summarized financial information for these segments is as follows:

($ in millions)	December 31,
	2022		2021		2020
Net premiums and contract charges earned
Property & Casualty	$	608.2	$	617.4	$	650.1
Life & Retirement	145.3		144.2		147.0
Supplemental & Group Benefits(1)	275.5		128.0		133.6
Total	$	1,029.0	$	889.6	$	930.7
Net investment income
Property & Casualty	$	31.4	$	61.1	$	42.6
Life & Retirement	338.3		338.6		299.3
Supplemental & Group Benefits(1)	33.3		25.2		18.1
Corporate & Other	—		(0.1)		(0.2)
Intersegment eliminations	(2.1)		(2.3)		(2.2)
Total	$	400.9	$	422.5	$	357.6
Net income (loss)
Property & Casualty	$	(44.4)	$	57.0	$	76.5
Life & Retirement	48.8		68.4		30.7
Supplemental & Group Benefits(1)	58.5		46.0		42.9
Corporate & Other	(65.5)		(28.6)		(16.8)
Total	$	(2.6)	$	142.8	$	133.3

Summary of Additional Significant Financial Information for these Segments

($ in millions)	December 31,
	2022		2021		2020
Assets
Property & Casualty	$	1,083.8	$	1,243.4	$	1,324.9
Life & Retirement	10,858.3		12,068.6		11,243.2
Supplemental & Group Benefits(1)	1,396.1		854.9		811.5
Corporate & Other	173.4		281.8		182.3
Intersegment eliminations	(64.8)		(64.8)		(90.1)
Total	$	13,446.8	$	14,383.9	$	13,471.8

Additional significant financial information for these segments is as follows:

($ in millions)	Years Ended December 31,
	2022		2021		2020
DAC amortization expense
Property & Casualty	$	64.3	$	67.7	$	74.4
Life & Retirement	32.8		25.5		23.8
Supplemental & Group Benefits(1)	1.6		1.5		1.7
Total	$	98.7	$	94.7	$	99.9
Income tax expense (benefit)
Property & Casualty	$	(13.8)	$	13.2	$	15.4
Life & Retirement	6.6		13.6		4.6
Supplemental & Group Benefits(1)	16.1		12.6		12.0
Corporate & Other	(18.2)		(7.3)		(5.7)
Total	$	(9.3)	$	32.1	$	26.3