Property and Casualty Insurance Reserves (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 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	(15.0)	(13.3)
Total Incurred Losses and LAE	238.0	256.3
Paid Losses and LAE Related to Prior Years	142.3	175.6
Total Paid Losses and LAE	250.7	287.4
Property and Casualty Insurance Reserves - Net of Reinsurance at End of Period	767.4	873.3
Plus Reinsurance Recoverables at End of Period	62.2	69.0
Property and Casualty Insurance Reserves - Gross of Reinsurance at End of Period	829.6	942.3
Continuing Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Current Year	253.0	269.6
Incurred Losses and LAE Related to Prior Years	(15.2)	(13.7)
Paid Losses and LAE Related to Current Year	108.4	111.8
Paid Losses and LAE Related to Prior Years	140.1	171.5
Discontinued Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	0.2	0.4
Paid Losses and LAE Related to Prior Years	2.2	4.1
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	(14.7)	(14.4)
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	(0.3)	1.1
Property and Casualty, Commercial Insurance Product Line [Member] | Continuing Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(0.5)	0.7
Property and Casualty, Commercial Insurance Product Line [Member] | Discontinued Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	0.2	0.4
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	(11.5)	(6.8)
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	(2.8)	(6.2)
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	$ (0.4)	$ (1.4)