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Accounting for and Classification of Discontinued Operations (Tables)
9 Months Ended
Sep. 30, 2011
Accounting for and Classification of Discontinued Operations [Abstract] 
Income From Discontinued Operations
Income (losses) from discontinued operations consisted of the following (in millions):

   
Quarter Ended
   
Nine Months Ended
 
   
September 30,
   
September 30,
 
   
2011
   
2010
   
2011
   
2010
 
                                 
Discontinued operations (net of tax):
                               
Sales of real estate assets
 
$
4.3
   
$
0.4
   
$
13.8
   
$
19.5
 
Real estate leasing operations
   
0.1
     
1.0
     
0.8
     
3.2
 
CLX2 operating and shutdown losses
   
(14.0
)
   
(1.3
)
   
(33.1
)
   
(1.3
)
Total
 
$
(9.6
)
 
$
0.1
   
$
(18.5
)
 
$
21.4