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Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2014
Fair Value Disclosures [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
The following table provides each major category of assets and liabilities measured at fair value on a nonrecurring basis during the three months ended March 31, 2013 (in millions):
 
 
 
Quoted prices in   
active
markets   
for identical
assets
 
Significant other
observable inputs
 
Significant  
 unobservable
inputs
 
Total gains /
 
 
 
Level 1
 
Level 2
 
Level 3
 
(losses)
 
Asset impairments
 
Not applicable
 
Not applicable
 
$
0.6
 
$
(1.0)