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Inventories, Net (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Inventory [Line Items]    
Finished goods $ 58.4 $ 40.0
Work in process 58.2 59.5
Raw materials and purchased parts 79.4 80.0
Total FIFO cost 196.0 179.5
Excess of FIFO cost over LIFO inventory value (12.4) (12.1)
Total inventories $ 170.7 $ 167.4
Domestic inventories, valued using the last-in, first-out ("LIFO") method, as a percentage of total inventory 46.00% 42.00%
Assets from Continuing Operations and Disposal Group, Held-for-sale, Not Discontinued Operations    
Inventory [Line Items]    
Total inventories [1] $ 183.6 $ 167.4
Dry Cooling Business | Disposal Group, Held-for-sale | Assets Held For Sale, Current    
Inventory [Line Items]    
Total inventories $ 12.9  
[1] The balance at December 31, 2015 includes $12.9 related to our dry cooling business. As previously noted, the assets and liabilities of the dry cooling business have been classified as "held for sale" in the accompanying consolidated balance sheet as of December 31, 2015. See Note 4 for information on the assets and liabilities of the dry cooling business as of December 31, 2015.