CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash flows - operating activities
Net income	$ 125.9	$ 64.6
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Net investment gains (losses)	5.9	(0.1)
Depreciation and intangible asset amortization	20.4	19.4
Share-based compensation expense	7.6	7.3
Loss (gain) from equity method investments, net of dividends or distributions	(4.2)	12.9
Changes in:
Insurance liabilities	103.7	121.6
Amounts due under reinsurance agreements	1.8	41.9
Income tax liabilities	(0.7)	(4.4)
Other operating assets and liabilities	163.3	7.5
Contributions to defined benefits plan	(0.7)	(1.2)
Other, net	0.3	(10.9)
Net cash provided by operating activities	423.3	258.6
Cash flows - investing activities
Fixed maturity securities purchases	(912.6)	(841.6)
Fixed maturity securities sales	283.0	202.3
Fixed maturity securities maturities, paydowns, calls and redemptions	478.7	420.0
Equity securities purchases	(2.2)	(3.6)
Equity securities sales, calls and repayments	22.4	0.0
Limited partnership interests purchases	(45.5)	(55.4)
Limited partnership interests sales	33.2	94.2
Change in short-term and other investments, net	(84.5)	46.4
Other-net	(7.1)	6.3
Net cash used in investing activities	(234.6)	(131.4)
Cash flows - financing activities
Dividends paid to shareholders	(42.9)	(41.7)
Proceeds from issuance of 2025 Senior Notes due 2030	296.0	0.0
Treasury stock acquired	(13.9)	(8.6)
Proceeds from exercise of stock options	5.3	1.1
Withholding tax payments on RSUs tendered	(3.4)	(1.7)
Annuity contracts: variable, fixed and FHLB funding agreements:
Deposits	896.6	550.0
Benefits, withdrawals and net transfers to Separate Account variable annuity assets	(451.8)	(465.5)
Repayment of FHLB funding agreements	(499.5)	(170.0)
Life policy accounts deposits, withdrawals, and surrenders	12.3	7.7
Change in deposit asset on reinsurance	(103.7)	(35.7)
Net increase (decrease) in reverse repurchase agreements	(12.0)	45.0
Change in book overdrafts	(7.3)	2.3
Net cash provided by (used in) financing activities	75.7	(117.1)
Net increase in cash and restricted cash	264.4	10.1
Cash and restricted cash at beginning of period	38.1	29.7
Cash and restricted cash at end of period	$ 302.5	$ 39.8