v2.3.0.15
Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2011
Fair Value Measurements [Abstract] 
Schedule Of Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis
 
Quoted Prices in
Active Markets
for
Identical Assets
    (Level 1)    
Significant
Other
Observable
Inputs
    (Level 2)    
 
Significant
Unobservable
Inputs
    (Level 3)    
 
 
 
 
     Total     
   
As of September 30, 2011
                       
Supplemental executive retirement plan assets    $24.2      
$   --   
   
$    --
    $24.2    
Total financial assets
 
$24.2  
   
$   --   
   
$    --
   
$24.2  
 
Derivatives, net   
$    --  
    $ 7.1       
$    --
    $ 7.1    
Total financial liabilities   
$    --  
    $ 7.1       
$    --
    $ 7.1    
 
As of December 31, 2010
                       
Auction rate securities
 
$    --  
   
$    --  
   
$44.5
   
$44.5  
 
Supplemental executive retirement plan assets
 
23.0  
   
    --  
   
--
   
23.0  
 
Derivatives, net 
 
    --  
   
16.4  
   
   --
   
16.4  
 
Total financial assets 
 
$23.0  
   
$16.4  
   
$44.5
   
$83.9  
 
Summary Of Fair Value Measurements Of Auction Rate Securities Using Significant Level 3 Inputs
Schedule Of Carrying Values And Estimated Fair Values Of Debt Instruments
 
September 30,
                  2011                   
December 31,
                   2010                  
 
 
Carrying
  Value  
Estimated
  Fair
   Value  
Carrying
  Value  
Estimated
  Fair
   Value  
 
 
         
4.70% Senior notes due 2021   $1,471.6          $1,490.3         $     --           $     --          
6.875% Senior notes due 2020   1,059.4          1,045.4         --           --          
3.25% Senior notes due 2016
  993.2          1,021.5          --            --          
8.50% Senior notes due 2019   635.4          612.6          --            --          
7.875% Senior notes due 2040   385.3          372.4          --            --          
7.20% Debentures due 2027           149.0          169.6         148.9          165.0         
4.33% MARAD bonds, including current maturities, due 2016   155.9          156.7          --            --          
6.36% MARAD bonds, including current maturities, due 2015
 
57.0       
 
63.8      
 
63.4       
 
71.9       
 
4.65% MARAD bonds, including current maturities, due 2020
 
42.8       
 
49.1      
 
45.0       
 
50.6