CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues
Net premiums and contract charges earned	$ 289.1	$ 266.0	$ 845.2	$ 782.6
Net investment income	113.0	118.9	326.8	327.8
Net investment gains (losses)	3.8	(8.4)	0.1	(29.7)
Other income	6.2	2.2	14.1	8.3
Total revenues	412.1	378.7	1,186.2	1,089.0
Benefits, losses and expenses
Benefits, claims and settlement expenses (Reserve remeasurement (gains)/losses $1200000, $(0.6), $900000, $(0.9))	191.3	199.2	574.9	587.6
Interest credited	54.8	52.7	161.5	152.1
Operating expenses	82.9	75.7	250.4	235.6
DAC amortization expense	28.1	26.3	82.1	75.4
Intangible asset amortization expense	3.6	3.7	10.9	11.1
Interest expense	8.7	7.5	26.1	21.1
Total benefits, losses and expenses	369.4	365.1	1,105.9	1,082.9
Income before income taxes	42.7	13.6	80.3	6.1
Income tax expense	8.4	1.9	15.7	0.6
Net income	$ 34.3	$ 11.7	$ 64.6	$ 5.5
Net income per share
Basic (in usd per share)	$ 0.83	$ 0.28	$ 1.56	$ 0.13
Diluted (in usd per share)	$ 0.83	$ 0.28	$ 1.56	$ 0.13
Weighted average number of shares and equivalent shares
Basic (in shares)	41.2	41.3	41.3	41.3
Diluted (in shares)	41.4	41.4	41.5	41.4
Statements of Comprehensive Income (Loss)
Net income	$ 34.3	$ 11.7	$ 64.6	$ 5.5
Other comprehensive income (loss), net of tax:
Change in net unrealized investment losses on fixed maturity securities	133.2	(141.0)	91.1	(85.1)
Change in net reserve remeasurements attributable to discount rates	(73.5)	90.7	(0.1)	74.6
Change in net funded status of benefit plans	0.0	0.0	0.0	0.0
Other comprehensive income	59.7	(50.3)	91.0	(10.5)
Comprehensive income (loss)	$ 94.0	$ (38.6)	$ 155.6	$ (5.0)