CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenues
Net premiums and contract charges earned	$ 298.3	$ 275.2
Net investment income	115.9	105.4
Net investment gains (losses)	(3.3)	2.2
Other income	5.5	3.2
Total revenues	416.4	386.0
Benefits, losses and expenses
Benefits, claims and settlement expenses (Reserve remeasurement (gains)/losses $2.1, $0.2)	183.2	176.3
Interest credited	52.8	52.9
Operating expenses	90.8	84.5
DAC amortization expense	29.6	27.0
Intangible asset amortization (after-tax)	3.6	3.6
Interest expense	8.9	8.7
Total benefits, losses and expenses	368.9	353.0
Income before income taxes	47.5	33.0
Income tax expense	9.3	6.5
Net income	$ 38.2	$ 26.5
Net income per share
Basic (in usd per share)	$ 0.93	$ 0.64
Diluted (in usd per share)	$ 0.92	$ 0.64
Weighted average number of shares and equivalent shares
Basic (in shares)	41.3	41.3
Diluted (in shares)	41.6	41.5
Statements of Comprehensive Income (Loss)
Net income	$ 38.2	$ 26.5
Other comprehensive income (loss), net of tax:
Change in net unrealized investment losses on fixed maturity securities	42.9	(19.7)
Change in net reserve remeasurements attributable to discount rates	(11.8)	41.4
Change in net funded status of benefit plans	0.0	0.0
Other comprehensive income	31.1	21.7
Comprehensive income	$ 69.3	$ 48.2