Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Fixed maturities, at fair value (amortized cost of $6,141.2 and $6,008.7)	$ 6,470.6	$ 6,284.7
Equity securities, at fair value (cost of $315.5 and $239.9)	334.1	246.4
Other investments	212.8	190.2
Total investments	7,017.5	6,721.3
Cash and cash equivalents	628.3	820.4
Accrued investment income	71.2	71.8
Premiums and accounts receivable, net	1,223.9	1,168.1
Reinsurance recoverable on paid and unpaid losses and unearned premiums	2,431.8	2,262.2
Deferred policy acquisition costs	468.0	458.6
Deferred income taxes	265.8	274.0
Goodwill	184.4	185.5
Other assets	496.0	515.5
Assets of discontinued operations	126.5	121.2
Total assets	12,913.4	12,598.6
LIABILITIES
Loss and loss adjustment expense reserves	5,827.3	5,760.3
Unearned premiums	2,363.4	2,292.1
Expenses and taxes payable	613.8	642.9
Reinsurance premiums payable	484.1	378.9
Debt	918.1	911.1
Liabilities of discontinued operations	127.7	129.3
Total liabilities	10,334.4	10,114.6
Commitments and contingencies
SHAREHOLDERS' EQUITY
Preferred stock, $0.01 par value, 20.0 million shares authorized, none issued
Common stock, $0.01 par value, 300.0 million shares authorized, $60.5 million shares issued	0.6	0.6
Additional paid-in capital	1,780.1	1,784.8
Accumulated other comprehensive income	265.1	210.4
Retained earnings	1,248.8	1,211.3
Treasury stock, at cost (15.8 and 15.9 million shares)	(715.6)	(723.1)
Total shareholders' equity	2,579.0	2,484.0
Total liabilities and shareholders' equity	$ 12,913.4	$ 12,598.6