CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues
Net premiums and contract charges earned	$ 310.3	$ 289.1	$ 911.2	$ 845.2
Net investment income	119.6	113.0	346.3	326.8
Net investment gains (losses)	3.3	3.8	(5.9)	0.1
Other income	5.3	6.2	15.0	14.1
Total revenues	438.5	412.1	1,266.6	1,186.2
Benefits, losses and expenses
Benefits, claims and settlement expenses (Reserve remeasurement (gains)/losses, $4.8; $1.2; $4.5; $0.9)	171.0	191.3	537.7	574.9
Interest credited	55.7	54.8	161.2	161.5
Operating expenses	96.3	82.9	284.0	250.4
DAC amortization expense	31.5	28.1	91.0	82.1
Intangible asset amortization expense	3.6	3.6	10.8	10.9
Interest expense	8.9	8.7	26.4	26.1
Total benefits, losses and expenses	367.0	369.4	1,111.1	1,105.9
Income before income taxes	71.5	42.7	155.5	80.3
Income tax expense	13.2	8.4	29.6	15.7
Net income	$ 58.3	$ 34.3	$ 125.9	$ 64.6
Net income per share
Basic (in usd per share)	$ 1.42	$ 0.83	$ 3.05	$ 1.56
Diluted (in usd per share)	$ 1.40	$ 0.83	$ 3.03	$ 1.56
Weighted average number of shares and equivalent shares
Basic (in shares)	41.2	41.2	41.3	41.3
Diluted (in shares)	41.6	41.4	41.6	41.5
Statements of Comprehensive Income (Loss)
Net income	$ 58.3	$ 34.3	$ 125.9	$ 64.6
Other comprehensive income (loss), net of tax:
Change in net unrealized investment losses on fixed maturity securities	59.1	133.2	106.6	91.1
Change in net reserve remeasurements attributable to discount rates	(20.4)	(73.5)	(31.5)	(0.1)
Change in net funded status of benefit plans	0.0	0.0	0.0	0.0
Other comprehensive income	38.7	59.7	75.1	91.0
Comprehensive income	$ 97.0	$ 94.0	$ 201.0	$ 155.6