Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income (loss)	$ (207.0)	$ 577.7
Adjustments to reconcile net income (loss) to
Deferred policy acquisition costs	5.9	(8.3)
Premiums and other receivables	(301.4)	(236.8)
Unpaid claims and related items	208.6	84.6
Unearned premiums and other policyholders' liabilities	(23.7)	33.3
Income taxes	(140.8)	87.1
Reinsurance balances	244.7	178.0
Realized from actual transactions and impairments	11.2	22.9
Unrealized investment (gains) losses from changes in fair value of equity securities	608.7	(382.0)
Accounts payable, accrued expenses and other	54.7	2.6
Total	438.3	313.4
Available for sale
Maturities and early calls	543.3	298.7
Sales	194.2	303.5
Sales of:
Equity securities	151.6	208.7
Other - net	4.9	25.8
Purchases of:
Available for sale	(518.1)	(689.6)
Equity securities	(271.2)	(313.1)
Other - net	(19.9)	(30.9)
Net decrease (increase) in short-term investments	(311.5)	1.5
Total	(226.7)	(195.1)
Cash flows from financing activities:
Issuance of common shares	5.6	6.9
Redemption of debentures and notes	(6.5)	(6.5)
Origination of Loans to Employee Stock Ownership Plans	(50.0)	0.0
Dividends on common shares	(125.3)	(119.4)
Other - net	(0.2)	0.0
Total	(176.3)	(118.8)
Cash, beginning of period	78.8	100.3
Cash, end of period	114.0	99.8
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	35.2	(0.5)
Supplemental cash flow information:
Cash paid (received) during the period for: Interest	20.7	20.9
Cash paid (received) during the period for: Income taxes	$ 78.0	$ 59.6