Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Assets
Fixed maturities, at fair value (amortized cost of $6,204.3 and $5,657.1)	$ 6,092.6	$ 5,749.3
Equity securities, at fair value	574.8	576.2
Other investments	633.2	562.7
Total investments	7,300.6	6,888.2
Cash and cash equivalents	117.9	297.9
Accrued investment income	53.0	48.2
Premiums and accounts receivable, net	1,217.8	1,095.7
Reinsurance recoverable on paid and unpaid losses and unearned premiums	1,586.0	1,625.5
Deferred acquisition costs	456.9	430.0
Deferred income taxes	33.5	17.0
Goodwill	178.8	178.8
Other assets	330.0	333.7
Assets held-for-sale	4,247.2	4,466.6
Total assets	15,624.3	15,469.6
Liabilities
Loss and loss adjustment expense reserves	5,188.9	5,058.5
Unearned premiums	2,314.4	2,131.7
Expenses and taxes payable	538.6	620.7
Reinsurance premiums payable	46.4	51.5
Debt	777.6	786.9
Liabilities held-for-sale	3,660.4	3,707.2
Total liabilities	12,641.9	12,471.9
Commitments and contingencies
Shareholders’ Equity
Preferred stock, par value $0.01 per share; 20.0 million shares authorized; none issued
Common stock, par value $0.01 per share; 300.0 million shares authorized; 60.5 million shares issued	0.6	0.6
Additional paid-in capital	1,868.9	1,857.0
Accumulated other comprehensive income (loss)	(190.8)	107.6
Retained earnings	2,277.6	1,975.0
Treasury stock at cost (18.2 million and 18.0 million shares)	(973.9)	(942.5)
Total shareholders’ equity	2,982.4	2,997.7
Total liabilities and shareholders’ equity	15,624.3	15,469.6
Discontinued Operations, Disposed of by Sale [Member]
Assets
Assets held-for-sale	102.6	88.0
Chaucer [Member] | Discontinued Operations, Disposed of by Sale [Member]
Assets
Assets held-for-sale	4,247.2	4,466.6
Liabilities
Liabilities held-for-sale	3,660.4	3,707.2
Life [Member] | Discontinued Operations, Disposed of by Sale [Member]
Assets
Assets held-for-sale	102.6	88.0
Liabilities
Liabilities held-for-sale	$ 115.6	$ 115.4