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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2011
Fair Value Disclosures [Abstract]  
Fair Value, Measurement Inputs, Disclosure [Table Text Block]
Dollar amounts in millions
June 30, 2011
 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Available for sale securities
$
19.6


 
$


 
$
4.4


 
$
15.2


Trading securities
2.8


 
2.8


 


 


Total
$
22.4


 
$
2.8


 
$
4.4


 
$
15.2


Dollar amounts in millions
December 31, 2010
 
Quoted Prices
in Active
Markets for
Identical
Assets
(Level 1)
 
Significant
Other
Observable
Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
Available for sale securities
$
15.4


 
$


 
$
3.8


 
$
11.6


Trading securities
2.6


 
2.6


 


 


Total
$
18.0


 
$
2.6


 
$
3.8


 
$
11.6


Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
The following table summarizes assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the periods ended June 30, 2010 and June 30, 2011.


Dollar amounts in millions
Available for
sale  securities
Balance at December 31, 2009
$
26.3


Total realized/unrealized gains (losses) included in other comprehensive income
7.8


Balance at June 30, 2010
$
34.1


The amount of total losses for the period included in net loss attributable to the fair value of changes in assets still held at June 30, 2010
$


 
 
Balance at December 31, 2010
$
11.6


Total realized/unrealized gains (losses) included in other comprehensive income
3.6


Balance at June 30, 2011
$
15.2


The amount of total losses for the period included in net loss attributable to the fair value of changes in assets still held at June 30, 2011
$