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

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Components of comprehensive income

The components of comprehensive income (loss) were as follows:

($ in millions)	Year Ended December 31,
	2021		2020		2019
Net income	$	142.8	$	133.3	$	184.4
Other comprehensive income (loss):
Change in net unrealized investment gains (losses) on fixed maturity securities:
Net unrealized investment gains (losses) on securities arising during the period	(104.9)		184.0		327.3
Less: reclassification adjustment for net investment gains (losses) included in income before income tax	(8.5)		11.2		157.4
Total, before tax	(96.4)		172.8		169.9
Income tax expense (benefit)	(20.8)		36.9		36.4
Total, net of tax	(75.6)		135.9		133.5
Change in net funded status of benefit plans:
Before tax	1.2		(0.5)		1.8
Income tax expense (benefit)	0.2		(0.1)		0.4
Total, net of tax	1.0		(0.4)		1.4
Total comprehensive income	$	68.2	$	268.8	$	319.3

Accumulated other comprehensive income (loss)

The following table reconciles the components of AOCI for the periods indicated.

($ in millions)	Net Unrealized Investment Gains (Losses) on Securities(1)(2)		Net Funded Status of Benefit Plans(1)		Total(1)
Beginning balance, January 1, 2021	$	366.3	$	(11.2)	$	355.1
Other comprehensive income (loss) before reclassifications	(82.3)		1.0		(81.3)
Amounts reclassified from AOCI	6.7		—		6.7
Net current period other comprehensive income (loss)	(75.6)		1.0		(74.6)
Ending balance, December 31, 2021	$	290.7	$	(10.2)	$	280.5
Beginning balance, January 1, 2020	$	230.4	$	(10.8)	$	219.6
Other comprehensive income (loss) before reclassifications	144.7		(0.4)		144.3
Amounts reclassified from AOCI	(8.8)		—		(8.8)
Net current period other comprehensive income (loss)	135.9		(0.4)		135.5
Ending balance, December 31, 2020	$	366.3	$	(11.2)	$	355.1
Beginning balance, January 1, 2019	$	96.9	$	(12.2)	$	84.7
Other comprehensive income (loss) before reclassifications	257.9		1.4		259.3
Amounts reclassified from AOCI	(124.4)		—		(124.4)
Net current period other comprehensive income (loss)	133.5		1.4		134.9
Ending balance, December 31, 2019	$	230.4	$	(10.8)	$	219.6

(1)    All amounts are net of tax.

(2)    The pretax amounts reclassified from AOCI, $(8.5) million, $11.2 million and $157.4 million, are included in net investment gains (losses) and the related tax expenses, $(1.8) million, $2.4 million and $33.0 million, are included in income tax expense in the Consolidated Statements of Operations for the years ended December 31, 2021, 2020 and 2019, respectively.