Property and Casualty Insurance Reserves (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Property and Casulty Insurance Reserve - Gross of Reinsurance at Beginning of Year	$ 843.5	$ 970.6
Less Reinsurance Recoverables at Beginning of Year	63.4	66.2
Property and Casualty Insurance Reserves - Net of Reinsurance at Beginning of Year	780.1	904.4
Incurred Losses and LAE Related to Prior Years	(34.3)	(33.4)
Total Incurred Losses and LAE	496.9	515.8
Paid Losses and LAE Related to Prior Years	237.7	287.8
Total Paid Losses and LAE	522.9	574.2
Property and Casualty Insurance Reserves - Net of Reinsurance at End of Period	754.1	846.0
Plus Reinsurance Recoverables at End of Period	61.1	73.0
Property and Casualty Insurance Reserves - Gross of Reinsurance at End of Period	815.2	919.0
Continuing Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Current Year	531.2	549.2
Incurred Losses and LAE Related to Prior Years	(34.2)	(31.1)
Paid Losses and LAE Related to Current Year	285.2	286.4
Paid Losses and LAE Related to Prior Years	233.0	280.6
Discontinued Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(0.1)	(2.3)
Paid Losses and LAE Related to Prior Years	4.7	7.2
Property and Casualty, Personal Insurance Product Line [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(34.1)	(31.1)
Property and Casualty, Commercial Insurance Product Line [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(0.2)	(2.3)
Personal Automobile [Member] | Property and Casualty, Personal Insurance Product Line [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(23.5)	(15.6)
Homeowners [Member] | Property and Casualty, Personal Insurance Product Line [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(8.8)	(11.4)
Other Personal Lines [Member] | Property and Casualty, Personal Insurance Product Line [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	$ (1.8)	$ (4.1)