Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Investments:
Fixed maturities available-for-sale, at fair value (cost: 2022 - $4,302.7, 2021 - $4,203.2; allowance for expected credit losses: 2022 - $2.9, 2021 - $2.5)	$ 4,143.9	$ 4,223.3
Equity securities, at fair value (cost: 2022 - $61.3; 2021 - $70.3)	54.0	56.3
Other investments (cost: 2022 - $452.4; 2021 - $387.0)	452.5	387.2
Short-term investments, at fair value (cost: 2022 - $420.6; 2021 - $655.4)	421.1	655.8
Total investments	5,071.5	5,322.6
Cash	154.0	146.1
Accrued investment income	22.1	20.9
Premiums receivable	649.3	648.6
Reinsurance recoverables	2,857.9	2,966.4
Goodwill	147.3	147.3
Intangible assets, net of accumulated amortization	17.3	17.3
Current income taxes receivable, net	0.0	7.3
Deferred tax asset, net	99.2	73.6
Deferred acquisition costs, net	174.6	168.0
Ceded unearned premiums	494.9	506.7
Operating lease right-of-use assets	60.8	81.4
Other assets	232.1	211.6
Total assets	9,981.0	10,317.8
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	5,648.1	5,595.0
Unearned premiums	1,386.0	1,466.8
Accrued underwriting expenses and other liabilities	167.4	166.6
Ceded reinsurance payable, net	577.9	724.4
Funds held	65.8	76.6
Senior unsecured fixed rate notes	140.4	140.3
Other indebtedness	57.3	57.0
Junior subordinated debentures	258.3	258.2
Operating lease liabilities	69.0	97.7
Total liabilities	8,370.2	8,582.6
Commitments and contingencies (Note 14)
Shareholders' equity:
Preferred shares and additional paid-in capital - $1.00 par, 30,000,000 shares authorized; 6,000 shares issued at March 31, 2022 and December 31, 2021, respectively; liquidation preference $25,000	144.0	144.0
Common shares - $1.00 par, 500,000,000 shares authorized; 46,260,520 and 46,192,867 shares issued at March 31, 2022 and December 31, 2021, respectively	46.3	46.2
Additional paid-in capital	1,388.5	1,386.4
Treasury shares (11,315,889 shares at March 31, 2022 and December 31, 2021, respectively)	(455.1)	(455.1)
Retained earnings	622.0	636.4
Accumulated other comprehensive income, net of taxes	(134.9)	(22.7)
Total shareholders' equity	1,610.8	1,735.2
Total liabilities and shareholders' equity	$ 9,981.0	$ 10,317.8