v2.3.0.15
Property and Casualty Insurance Reserves (Details) (USD $)
In Millions
9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Causes of Increase (Decrease) in Liability for Unpaid Claims and Claims Adjustment Expense [Line Items]  
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims$ 1,010.2$ 964.6
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]  
Property and Casulty Insurance Reserve - Gross of Reinsurance at Beginning of Year1,118.71,211.3
Less Reinsurance Recoverables at Beginning of Year78.177.4
Property and Casualty Insurance Reserves - Net of Reinsurance at Beginning of Year1,040.61,133.9
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Prior Years(28.2)(19.1)
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years422.0457.8
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid1,058.71,036.8
Property and Casualty Insurance Reserves - Gross of Reinsurance at End of Period1,063.61,131.4
Plus Reinsurance Recoverabe at End of Period71.569.7
Property and Casualty Insurance Reserves - Net of Reinsurance at End of Period992.11,061.7
Personal Lines [Member]
  
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]  
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Prior Years(27.6)(19.2)
Commercial Lines [Member]
  
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]  
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Prior Years(0.6)0.1
Segment, Continuing Operations [Member]
  
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]  
Incurred Losses and LAE Related to Current Year1,038.4983.7
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Prior Years(30.1)(19.5)
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year636.7579.0
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years399.9425.3
Segment, Discontinued Operations [Member]
  
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]  
Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Prior Years1.90.4
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years$ 22.1$ 32.5