Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018	[1]
Investments:
Fixed maturities available-for-sale, at fair value (cost: 2019 - $3,716.6; 2018 - $3,529.1)	$ 3,745.6	$ 3,460.4
Equity securities, at fair value (cost: 2019 - $298.6; 2018 - $310.6)	400.6	354.5
Other investments (cost: 2019 - $486.0; 2018 - $482.0)	500.0	489.8
Short-term investments, at fair value (cost: 2019 - $481.5; 2018 - $482.3)	480.8	482.3
Total investments	5,127.0	4,787.0
Cash	145.1	139.2
Accrued investment income	27.7	27.2
Premiums receivable	740.3	649.9
Reinsurance recoverables	2,873.8	2,688.3
Goodwill	177.0	177.0
Intangible assets, net of accumulated amortization	92.2	93.5
Current income taxes receivable, net	0.2	8.2
Deferred acquisition costs, net	159.5	167.3
Ceded unearned premiums	603.8	457.7
Operating lease right-of-use assets	108.6
Other assets	390.6	362.9
Total assets	10,445.8	9,558.2
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	4,842.5	4,654.6
Unearned premiums	1,495.5	1,300.9
Accrued underwriting expenses and other liabilities	283.9	261.9
Ceded reinsurance payable, net	1,175.7	970.5
Funds held	36.1	37.2
Senior unsecured fixed rate notes	139.9	139.8
Other indebtedness	181.4	183.4
Junior subordinated debentures	257.3	257.0
Deferred tax liabilities, net	19.9	6.2
Operating lease liabilities	120.2	0.0
Total liabilities	8,552.4	7,811.5
Commitments and contingencies (Note 14)
Shareholders' equity:
Common shares - $1.00 par, 500,000,000 shares authorized; 45,629,710 and 45,276,999 shares issued at September 30, 2019 and December 31, 2018, respectively	45.6	45.3
Additional paid-in capital	1,373.2	1,372.0
Treasury shares (11,315,889 shares at September 30, 2019 and December 31, 2018, respectively)	(455.1)	(455.1)
Retained earnings	925.0	862.6
Accumulated other comprehensive income (loss), net of taxes	4.7	(78.1)
Total shareholders' equity	1,893.4	1,746.7
Total liabilities and shareholders' equity	$ 10,445.8	$ 9,558.2

[1] Derived from audited consolidated financial statements.