Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Investments:
Fixed maturities available-for-sale, at fair value (amortized cost: 2022 - $4,156.5, 2021 - $4,203.2; allowance for expected credit losses: 2022 - $2.0, 2021 - $2.5)	$ 3,849.0	$ 4,223.3
Commercial mortgage loans (cost: 2022 - $157.5)	157.5	0.0
Equity securities, at fair value (cost: 2022 - $58.4; 2021 - $70.3)	48.1	56.3
Other investments (cost: 2022 - $394.0; 2021 - $387.0)	394.1	387.2
Short-term investments, at fair value (amortized cost: 2022 - $464.5; 2021 - $655.4)	465.0	655.8
Total investments	4,913.7	5,322.6
Cash	165.1	146.1
Accrued investment income	22.2	20.9
Premiums receivable	674.8	648.6
Reinsurance recoverables	2,887.3	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	126.4	73.6
Deferred acquisition costs, net	174.3	168.0
Ceded unearned premiums	480.5	506.7
Operating lease right-of-use assets	58.8	81.4
Other assets	208.4	211.6
Total assets	9,876.1	10,317.8
Liabilities and Shareholders' Equity
Reserves for losses and loss adjustment expenses	5,595.5	5,595.0
Unearned premiums	1,384.4	1,466.8
Accrued underwriting expenses and other liabilities	152.4	166.6
Ceded reinsurance payable, net	525.0	724.4
Funds held	233.1	76.6
Senior unsecured fixed rate notes	140.4	140.3
Other indebtedness	54.4	57.0
Junior subordinated debentures	258.4	258.2
Current income taxes payable, net	4.8	0.0
Operating lease liabilities	67.0	97.7
Total liabilities	8,415.4	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 June 30, 2022 and December 31, 2021, respectively; liquidation preference $25,000	144.0	144.0
Common shares - $1.00 par, 500,000,000 shares authorized; 46,291,590 and 46,192,867 shares issued at June 30, 2022 and December 31, 2021, respectively	46.3	46.2
Additional paid-in capital	1,388.9	1,386.4
Treasury shares (11,315,889 shares at June 30, 2022 and December 31, 2021, respectively)	(455.1)	(455.1)
Retained earnings	592.6	636.4
Accumulated other comprehensive income (loss), net of taxes	(256.0)	(22.7)
Total shareholders' equity	1,460.7	1,735.2
Total liabilities and shareholders' equity	$ 9,876.1	$ 10,317.8