Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net income	$ 221.9	$ 163.1
Adjustments to reconcile net income to cash provided by operating activities:
Provision for policy losses and other claims	152.0	149.0
Depreciation and amortization	105.5	102.2
Amortization of premiums and accretion of discounts on debt securities, net	(20.9)	4.0
Net investment losses	20.5	4.2
Share-based compensation	47.8	32.8
Equity in earnings of affiliates, net	(5.1)	(3.0)
Dividends from equity method investments	3.4	3.3
Changes in assets and liabilities excluding effects of acquisitions and noncash transactions:
Claims paid, including assets acquired, net of recoveries	(164.5)	(179.4)
Net change in income tax accounts	62.7	47.8
(Increase) decrease in accounts and accrued income receivable	(34.7)	124.1
Decrease in accounts payable and accrued liabilities	(61.4)	(63.1)
Decrease in deferred revenue	(6.5)	(6.3)
Other, net	(11.7)	(42.7)
Cash provided by operating activities	309.0	336.0
Cash flows from investing activities:
Acquisitions/dispositions, net of cash acquired/divested	(3.9)	(6.3)
Net decrease (increase) in deposits with banks	6.4	(2.7)
Purchases of debt securities	(1,393.7)	(592.2)
Proceeds from sales of debt securities	507.0	361.9
Proceeds from maturities of debt securities	312.3	291.3
Purchases of equity securities	(19.4)	(34.2)
Proceeds from sales of equity securities	17.3	57.8
Net change in other investments	(6.5)	0.3
Advances under secured financing agreements	(18,613.4)	(10,879.5)
Collections of secured financings receivable	18,328.3	10,778.5
Capital expenditures	(94.1)	(108.4)
Proceeds from sales of property and equipment	0.1	0.0
Proceeds from insurance settlement	1.9	2.9
Cash used for investing activities	(957.7)	(130.6)
Cash flows from financing activities:
Net change in deposits	911.6	(1,691.9)
Borrowings under secured financing agreements	18,071.3	10,709.2
Repayments of secured financings payable	(17,831.3)	(10,621.0)
Repayments of other notes and contracts payable	(1.3)	(1.5)
Net activity related to noncontrolling interests	(1.7)	4.1
Net payments in connection with share-based compensation	(1.1)	(2.3)
Repurchases of Company shares	(88.7)	(44.2)
Payments of cash dividends	(111.0)	(109.6)
Cash provided by (used for) financing activities	947.8	(1,757.2)
Effect of exchange rate changes on cash	14.0	(4.9)
Net increase (decrease) in cash and cash equivalents	313.1	(1,556.7)
Cash and cash equivalents—Beginning of period	1,718.1	3,605.3
Cash and cash equivalents—End of period	2,031.2	2,048.6
Supplemental information:
Interest	71.6	78.1
Premium taxes	42.6	31.0
Income taxes paid	21.5	11.7
Income tax refunds	$ (14.3)	$ (12.8)