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Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2011
Fair Value Disclosures [Abstract]  
Fair Value, Assets Measured on Recurring Basis
The following table presents our fair value hierarchy for those assets measured at fair value on a recurring basis as of December 31, 2011 and 2010, respectively:
 
December 31, 2011
 
Level 1
 
Level 2
 
Level 3
 
Total
 
(In millions)
Fixed-maturity securities (available for sale) (1):
 

 
 

 
 

 
 

U.S. government and agencies
$

 
$
174.6

 
$

 
$
174.6

State and political subdivisions

 
1,439.5

 

 
1,439.5

Corporate debt securities

 
1,569.1

 

 
1,569.1

Foreign government bonds

 
47.1

 

 
47.1

Mortgage-backed/asset-backed securities

 
226.7

 

 
226.7

Preferred stock available for sale (2)
14.2

 
71.4

 

 
85.6

Equity securities available for sale
105.7

 

 

 
105.7

Other long-term investments

 

 
40.8

 
40.8

     Total
$
119.9

 
$
3,528.4

 
$
40.8

 
$
3,689.1

________________________
(1) Includes $256.8 million relating to the at-risk insurance business that have been reclassed into prepaid and other assets on the Consolidated Balance Sheet as they are considered held for sale as of December 31, 2011.
(2) Includes $14.2 million relating to the at-risk insurance business that have been reclassed into prepaid and other assets on the Consolidated Balance Sheet as they are considered held for sale as of December 31, 2011.
 
December 31, 2010
 
Level 1
 
Level 2
 
Level 3
 
Total
 
(In millions)
Fixed-maturity securities (available for sale):
 

 
 

 
 

 
 

U.S. government and agencies
$

 
$
313.5

 
$

 
$
313.5

State and political subdivisions

 
1,374.0

 

 
1,374.0

Corporate debt securities

 
1,532.7

 

 
1,532.7

Foreign government bonds and other fixed maturity securities

 
80.6

 
9.5

 
90.1

Mortgage-backed/asset-backed securities

 
184.0

 

 
184.0

Equity securities available for sale
75.2

 

 

 
75.2

Other long-term investments

 

 
90.1

 
90.1

     Total
$
75.2

 
$
3,484.8

 
$
99.6

 
$
3,659.6

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
The following table presents the changes in our investments that are classified as Level 3 for the years ended December 31, 2011 and 2010 (in millions).
Balance, December 31, 2009
$
123.9

Proceeds received upon call/sales
(34.9
)
Realized gain
24.8

Net change included in other comprehensive earnings
(14.2
)
Balance, December 31, 2010
99.6

Proceeds received upon call/sales
(53.6
)
Realized loss
(0.7
)
Net change included in other comprehensive earnings
(4.5
)
Balance, December 31, 2011
$
40.8