CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues
Premiums and contract charges earned	$ 889.6	$ 930.7	$ 898.0
Net investment income	422.5	357.6	365.1
Net investment (losses) gains	(11.0)	(2.3)	153.3
Other income	29.0	24.4	14.1
Total revenues	1,330.1	1,310.4	1,430.5
Benefits, losses and expenses
Benefits, claims and settlement expenses	617.7	568.9	585.1
Interest credited	164.4	204.6	212.8
Operating expenses	251.5	237.8	234.6
DAC unlocking and amortization expense	94.7	99.9	109.2
Intangible asset amortization expense	13.0	14.4	8.8
Interest expense	13.9	15.2	15.6
Other expense - goodwill and intangible asset impairments	0.0	10.0	28.0
Total benefits, losses and expenses	1,155.2	1,150.8	1,194.1
Income before income taxes	174.9	159.6	236.4
Income tax expense	32.1	26.3	52.0
Net income	$ 142.8	$ 133.3	$ 184.4
Net income per share
Basic (in usd per share)	$ 3.40	$ 3.18	$ 4.42
Diluted (in usd per share)	$ 3.39	$ 3.17	$ 4.40
Weighted average number of shares and equivalent shares
Basic (in shares)	42.0	41.9	41.7
Diluted (in shares)	42.2	42.0	41.9
Net income	$ 142.8	$ 133.3	$ 184.4
Other comprehensive income (loss), net of tax:
Change in net unrealized investment gains (losses) on fixed maturity securities	(75.6)	135.9	133.5
Change in net funded status of benefit plans	1.0	(0.4)	1.4
Other comprehensive income (loss)	(74.6)	135.5	134.9
Comprehensive income	$ 68.2	$ 268.8	$ 319.3