Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income (loss)	$ (604.8)	$ 412.2
Adjustments to reconcile net income (loss) to
Deferred policy acquisition costs	2.0	(3.2)
Premiums and other receivables	(119.9)	(85.7)
Unpaid claims and related items	73.7	29.8
Unearned premiums and other policyholders' liabilities	0.7	12.1
Income taxes	(171.5)	101.0
Reinsurance balances and funds	89.9	43.1
Realized from actual transactions and impairments	18.5	12.3
Unrealized investment (gains) losses from changes in fair value of equity securities	962.7	(355.6)
Accounts payable, accrued expenses and other	1.9	(5.3)
Total	216.3	136.2
Available for sale
Maturities and early calls	297.3	155.8
Sales	88.8	126.7
Sales of:
Equity securities	140.5	184.2
Other - net	3.2	3.0
Purchases of:
Available for sale	(274.4)	(369.6)
Equity securities	(271.2)	(172.8)
Other - net	(10.9)	(12.3)
Net decrease (increase) in short-term investments	(9.8)	3.9
Total	(36.4)	(80.9)
Cash flows from financing activities:
Issuance of common shares	5.0	3.2
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	(62.9)	(59.6)
Other - net	0.1	0.1
Total	(114.2)	(62.7)
Increase (decrease) in cash	65.6	(7.5)
Cash, beginning of period	78.8	100.3
Cash, end of period	144.5	92.8
Supplemental cash flow information:
Cash paid (received) during the period for: Interest	20.6	20.7
Cash paid (received) during the period for: Income taxes	$ 6.7	$ 5.3