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Discontinued Operations (Details 1) (Service Experts [Member], USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Service Experts [Member]
   
Assets of discontinued operations:    
Accounts receivable, net $ 0 $ 11.2
Inventories, net 0 4.8
Property, Plant and Equipment, net 0 3.6
Goodwill and intangible assets, net 0 [1] 66.2 [1]
Deferred income taxes 0 5.5
Other assets 0 7.3
Liabilities of discontinued operations:    
Accounts payable 0 16.7
Accrued expenses $ 0 $ 38.5
[1] Goodwill was $66.0 million as of December 31, 2012 and included accumulated impairment charges of $228.5 million, of which $208.0 million was from years prior to 2012 and $20.5 million was from 2012. No impairments were recorded in 2013, and all goodwill was eliminated on March 22, 2013 as a result of the sale of the business.