Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 46.7	$ 46.0
Adjustments to reconcile net income to cash provided by operating activities:
Provision for policy losses and other claims	69.5	82.3
Depreciation and amortization	50.1	45.5
Amortization of premiums and accretion of discounts on debt securities, net	2.1	1.6
Net investment (gains) losses	(9.0)	7.4
Share-based compensation	23.4	23.0
Equity in earnings of affiliates, net	(1.1)	(0.5)
Dividends from equity method investments	0.8	1.6
Changes in assets and liabilities excluding effects of acquisitions and noncash transactions:
Claims paid, including assets acquired, net of recoveries	(91.6)	(95.2)
Net change in income tax accounts	20.9	11.7
Decrease in accounts and accrued income receivable	160.2	12.7
Decrease in accounts payable and accrued liabilities	(143.7)	(202.9)
Decrease in deferred revenue	(13.8)	(12.8)
Other, net	(45.2)	(12.7)
Cash provided by (used for) operating activities	69.3	(92.3)
Cash flows from investing activities:
Acquisitions/dispositions, net of cash acquired/divested	(3.5)	(4.9)
Net (increase) decrease in deposits with banks	(23.3)	9.3
Purchases of debt securities	(332.5)	(246.3)
Proceeds from sales of debt securities	224.5	715.5
Proceeds from maturities of debt securities	132.8	210.5
Purchases of equity securities	(31.6)	(34.2)
Proceeds from sales of equity securities	44.2	11.1
Net change in other investments	(1.6)	(0.8)
Advances under secured financing agreements	(4,792.6)	(2,778.4)
Collections of secured financings receivable	4,601.0	2,606.0
Capital expenditures	(51.7)	(63.1)
Proceeds from sales of property and equipment		0.1
Proceeds from insurance settlement	2.9	2.1
Cash (used for) provided by investing activities	(231.4)	426.9
Cash flows from financing activities:
Net change in deposits	(2,004.8)	630.2
Borrowings under secured financing agreements	4,732.8	2,749.4
Repayments of secured financings payable	(4,597.3)	(2,612.8)
Repayment of senior unsecured notes		(250.0)
Repayments of other notes and contracts payable	(0.6)	(1.8)
Net activity related to noncontrolling interests	4.1	(1.1)
Net payments in connection with share-based compensation	(8.0)	(6.0)
Repurchases of Company shares	(3.5)	(30.4)
Payments of cash dividends	(54.9)	(53.8)
Cash (used for) provided by financing activities	(1,932.2)	423.7
Effect of exchange rate changes on cash	(4.6)	1.6
Net (decrease) increase in cash and cash equivalents	(2,098.9)	759.9
Cash and cash equivalents—Beginning of period	3,605.3	1,223.5
Cash and cash equivalents—End of period	1,506.4	1,983.4
Supplemental information:
Interest	36.2	25.9
Premium taxes	19.5	30.6
Income taxes paid	3.4	1.9
Income tax refunds	$ (12.7)	$ (0.2)