Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 260.5	$ 250.2
Adjustments to reconcile net income to
Deferred policy acquisition costs	(23.0)	(10.1)
Premiums and other receivables	(189.5)	(75.7)
Unpaid claims and related items	147.4	35.5
Unearned premiums and other policyholders' liabilities	95.1	57.1
Income taxes	35.1	116.6
Prepaid federal income taxes	(30.9)	0
Reinsurance balances and funds	135.7	40.3
Realized investment (gains) losses	241.2	141.7
Accounts payable, accrued expenses and other	(16.8)	6.0
Total	172.3	278.3
Fixed maturity securities:
Maturities and early calls	408.3	562.6
Sales	699.0	48.9
Sales of:
Equity securities	420.2	161.3
Other - net	7.3	23.3
Purchases of:
Fixed maturity securities	(679.3)	(973.4)
Equity securities	(748.8)	(148.4)
Other - net	(23.7)	(19.6)
Net decrease (increase) in short-term investments	(165.3)	172.0
Other - net	(2.8)	(0.4)
Total	(85.1)	(173.5)
Cash flows from financing activities:
Issuance of common shares	4.2	3.8
Redemption of debentures and notes	(3.0)	(2.8)
Dividends on common shares	(94.1)	(92.2)
Other - net	(1.3)	(1.9)
Total	(94.2)	(93.2)
Increase (decrease) in cash	(6.9)	11.4
Cash, beginning of period	153.3	101.2
Cash, end of period	146.3	112.7
Supplemental cash flow information:
Cash paid (received) during the period for: Interest	10.5	10.6
Cash paid (received) during the period for: Income taxes	$ 101.0	$ 14.4