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Discontinued Operations (Tables)
3 Months Ended
Mar. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]  
Summary of net trade sales, pre-tax operating income (loss) and other supplemental information related to discontinued operations
The following table provides a summary of net trade sales, pre-tax operating income (loss) and other supplemental information related to discontinued operations (in millions):
 
Service Experts
 
Hearth
 
For the Three Months Ended March 31,
 
For the Three Months Ended March 31,
 
2014
 
2013
 
2014
 
2013
Net trade sales (1)
$

 
$
73.5

 
$

 
$

Pre-tax operating income (loss) (1)

 
(15.1
)
 

 
0.1

Gain (loss) on sale of business
(0.1
)
 
1.7

 
0.1