Other Comprehensive Income (Loss) And Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2023

The tables below display the changes in Accumulated Other Comprehensive Loss by component for the years ended December 31, 2023, 2022 and 2021:


(Dollars in Millions)	Net Unrealized Losses on Other Investments		Net Unrealized Losses on Investments with an Allowance for Credit Losses		Net Unrecognized Postretirement Benefit Costs		Gain on Cash Flow Hedge on Cash Flow Hedges		Change in Discount Rate on Future Life Policyholder Benefits		Total
Balance as of January 1, 2021	$	730.6	$	(2.1)	$	(45.7)	$	(2.3)	$	(1,030.3)	$	(349.8)
Other Comprehensive (Loss) Income Before Reclassifications	(182.0)		(1.6)		(6.5)		—		180.6		(9.5)
Amounts Reclassified from Accumulated Other Comprehensive Income Net of Tax Benefit (Expense) of $11.3, $—, $—, $(0.1). $—, and $11.2	(42.8)		—		0.1		0.4		—		(42.3)
Other Comprehensive Income (Loss) Net of Tax Benefit (Expense) of $59.7, $0.4, $2.4, $(0.1), $(47.9), and $14.5	(224.8)		(1.6)		(6.4)		0.4		180.6		(51.8)
Balance as of December 31, 2021	$	505.8	$	(3.7)	$	(52.1)	$	(1.9)	$	(849.7)	$	(401.6)

Other Comprehensive (Loss) Income Before Reclassifications	(1,215.1)		2.0		15.2		4.7		1,090.8		(102.4)
Amounts Reclassified from Accumulated Other Comprehensive Loss Net of Tax Benefit of $2.7, $0.1, $0.1, $—, $—, and $2.9	(10.1)		(0.5)		(0.3)		—		—		(10.9)
Other Comprehensive (Loss) Income Net of Tax Benefit (Expense) of $325.9, $(0.4), $(4.0), $(1.2), $(289.9) and $30.4	(1,225.2)		1.5		14.9		4.7		1,090.8		(113.3)
Balance as of December 31, 2022	$	(719.4)	$	(2.2)	$	(37.2)	$	2.8	$	241.1	$	(514.9)

Other Comprehensive Income (Loss) Before Reclassifications	185.0		(0.3)		(6.0)		—		(80.5)		98.2
Amounts Reclassified from Accumulated Other Comprehensive Loss Net of Tax (Expense) Benefit of $(0.9), $—, $(13.8), $(0.1), $—, and $(14.8)	3.5		—		52.7		(0.3)		—		55.9
Other Comprehensive Income (Loss) Before Reclassifications Net of Tax (Expense) Benefit of $(50.3), $0.2, $(12.5), $(0.1), $21.2, and $(41.5)	188.5		(0.3)		46.7		(0.3)		(80.5)		154.1
Balance as of December 31, 2023	$	(530.9)	$	(2.5)	$	9.5	$	2.5	$	160.6	$	(360.8)