v3.26.1
Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash Flows From Operating Activities    
Net income $ 378.4 $ 285.3
Adjustments to reconcile net income to net cash provided by operating activities:    
Net realized and unrealized investment (gains) losses (0.3) 20.6
Net amortization and depreciation (2.8) (2.1)
Stock-based compensation expense 18.1 17.8
Amortization of defined benefit plan costs 3.4 3.3
Deferred income tax benefit (3.0) (2.5)
Change in deferred acquisition costs (13.2) (11.7)
Change in premiums receivable, net of reinsurance premiums payable (88.9) (81.7)
Change in loss, loss adjustment expense and unearned premium reserves 282.7 225.6
Change in reinsurance recoverable (67.8) 15.6
Change in expenses and taxes payable (123.6) (150.2)
Other, net (51.9) (74.5)
Net cash provided by operating activities 331.1 245.5
Cash Flows From Investing Activities    
Proceeds from disposals and maturities of fixed maturities 1,185.8 1,476.4
Proceeds from disposals of equity securities and other investments 66.0 57.8
Purchase of fixed maturities (1,792.1) (1,818.9)
Purchase of equity securities and other investments (53.3) (46.2)
Capital expenditures (6.4) (3.5)
Net cash used in investing activities (600.0) (334.4)
Cash Flows From Financing Activities    
Proceeds from exercise of employee stock options 12.1 12.2
Dividends paid to shareholders (66.6) (64.7)
Repayment of debt (375.0) 0.0
Repurchases of common stock (141.9) (38.6)
Other financing activities (16.3) (11.7)
Net cash used in financing activities (587.7) (102.8)
Net change in cash and cash equivalents (856.6) (191.7)
Net change in cash related to discontinued operations 0.0 0.3
Cash and cash equivalents, beginning of period 1,122.7 435.5
Cash and cash equivalents, end of period 266.1 244.1
Reclassification out of Accumulated Other Comprehensive Loss [Member]    
Cash Flows From Operating Activities    
Net income $ (12.5) $ (20.9)