Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Investments:
Fixed Maturities at Fair Value (Amortized Cost: 2019 - $6,299.7; 2018 - $6,284.5)	$ 6,883,600,000	$ 6,424,200,000
Equity Securities at Fair Value	928,700,000	684,400,000
Equity Securities at Modified Cost	41,200,000	41,500,000
Equity Method Limited Liability Investments at Cost Plus Cumulative Undistributed Earnings	213,400,000	187,000,000.0
Convertible Securities at Fair Value	35,600,000	31,500,000
Short-term Investments at Cost which Approximates Fair Value	424,200,000	286,100,000
Other Investments	447,400,000	414,800,000
Total Investments	8,974,100,000	8,069,500,000
Cash	133,600,000	75,100,000
Receivables from Policyholders	1,139,800,000	1,007,100,000
Other Receivables	217,100,000	245,400,000
Deferred Policy Acquisition Costs	536,500,000	470,000,000.0
Goodwill	1,114,000,000.0	1,112,400,000
Current Income Tax Assets	44,100,000	38,900,000
Other Assets	660,700,000	526,500,000
Total Assets	12,819,900,000	11,544,900,000
Insurance Reserves:
Life and Health	3,566,200,000	3,558,700,000
Property and Casualty	1,941,600,000	1,874,900,000
Total Insurance Reserves	5,507,800,000	5,433,600,000
Unearned Premiums	1,574,900,000	1,424,300,000
Deferred Income Tax Liabilities	175,300,000	26,200,000
Liabilities for Unrecognized Tax Benefits	0	4,400,000
Collateralized Investment Borrowings at Cost (Fair Value: 2019 - $137.6; 2018 - $10.0)	137,600,000	10,000,000.0
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2019 - $817.0; 2018 - $911.2)	778,700,000	909,000,000.0
Accrued Expenses and Other Liabilities	751,400,000	687,300,000
Total Liabilities	8,925,700,000	8,494,800,000
Shareholders’ Equity:
Common Stock, $0.10 Par Value, 100 Million Shares Authorized; 66,641,693 Shares Issued and Outstanding at September 30, 2019 and 64,756,833 Shares Issued and Outstanding at December 31, 2018	6,700,000	6,500,000
Paid-in Capital	1,812,900,000	1,666,300,000
Retained Earnings	1,704,500,000	1,355,500,000
Accumulated Other Comprehensive Income	370,100,000	21,800,000
Total Shareholders’ Equity	3,894,200,000	3,050,100,000
Total Liabilities and Shareholders’ Equity	$ 12,819,900,000	$ 11,544,900,000