Business Segments (Tables)

3 Months Ended

Mar. 31, 2018

Segment Reporting [Abstract]

Revenue from External Customers by Products and Services [Table Text Block]

Earned Premiums by product line for the three months endedMarch 31, 2018 and 2017 were:

	Three Months Ended
(Dollars in Millions)	Mar 31, 2018		Mar 31, 2017
Personal Automobile	$	371.1	$	320.7
Homeowners	61.8		66.3
Other Personal Property and Casualty Insurance	27.7		28.9
Commercial Automobile	12.2		12.7
Life	93.7		95.7
Accident and Health	43.3		39.1
Total Earned Premiums	$	609.8	$	563.4

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

Segment Revenues, including a reconciliation to Total Revenues, for the three months endedMarch 31, 2018 and 2017 were:

	Three Months Ended
(Dollars in Millions)	Mar 31, 2018			Mar 31, 2017
Revenues:
Property & Casualty Insurance:
Earned Premiums	$	455.2		$	410.4
Net Investment Income	22.5			24.1
Other Income	0.3			0.2
Total Property & Casualty Insurance	478.0			434.7
Life & Health Insurance:
Earned Premiums	154.6			153.0
Net Investment Income	53.3			53.0
Other Income	0.8			0.6
Total Life & Health Insurance	208.7			206.6
Total Segment Revenues	686.7			641.3
Income from Change in Fair Value of Equity Securities	0.7			—
Net Realized Gains on Sales of Investments	2.6			10.5
Net Impairment Losses Recognized in Earnings	(0.5		)	(5.0		)
Other	3.5			4.6
Total Revenues	$	693.0		$	651.4

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

Segment Operating Profit (Loss), including a reconciliation to Income (Loss) from Continuing Operations before Income Taxes, for the three months endedMarch 31, 2018 and 2017 was:

	Three Months Ended
(Dollars in Millions)	Mar 31, 2018			Mar 31, 2017
Segment Operating Profit (Loss):
Property & Casualty Insurance	$	44.5		$	(37.2	)
Life & Health Insurance	29.9			32.6
Total Segment Operating Profit (Loss)	74.4			(4.6		)
Corporate and Other Operating Loss	(4.0		)	(4.4		)
Income from Change in Fair Value of Equity Securities	0.7			—
Net Realized Gains on Sales of Investments	2.6			10.5
Net Impairment Losses Recognized in Earnings	(0.5		)	(5.0		)
Acquisition Related Transaction and Integration Costs	(6.2		)	—
Income (Loss) from Continuing Operations before Income Taxes	$	67.0		$	(3.5	)

Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table Text Block]

Segment Net Operating Income (Loss), including a reconciliation to Income (Loss) from Continuing Operations, for the three months endedMarch 31, 2018 and 2017 was:

	Three Months Ended
(Dollars in Millions and Net of Income Taxes)	Mar 31, 2018			Mar 31, 2017
Segment Net Operating Income (Loss):
Property & Casualty Insurance	$	36.0		$	(22.1	)
Life & Health Insurance	23.8			21.5
Total Segment Net Operating Income (Loss)	59.8			(0.6		)
Corporate and Other Net Operating Loss	(2.3		)	(3.3		)
Income from Change in Fair Value of Equity Securities	0.6			—
Net Realized Gains on Sales of Investments	2.1			6.8
Net Impairment Losses Recognized in Earnings	(0.4		)	(3.3		)
Acquisition Related Transaction and Integration Costs	(6.2		)	—
Income (Loss) from Continuing Operations	$	53.6		$	(0.4	)