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Income Taxes (Details 2) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Minimum
Dec. 31, 2013
Maximum
Dec. 31, 2012
Cooling
Dec. 31, 2012
Cooling
Dec. 31, 2013
State and Local Jurisdiction
Dec. 31, 2013
Foreign Jurisdictions
Operating Loss Carryforwards                  
Tax loss carryforwards               $ 449.0 $ 817.0
Carryforwards expiring in 2014 6.0                
Carryforwards expiring between 2014 and 2033 506.0                
Tax credit carryforwards               4.1  
Income tax benefit associated with the impairment charges related to cooling           26.3 26.3    
Impairment charges related to cooling 6.7 285.9 28.3     281.4 281.4    
State income tax returns subject to examination for a period       3 years 5 years        
Increase (decrease) in valuation allowance 21.2 3.6              
Increase (decrease) in valuation allowance recognized as a reduction in tax expense from continuing operations 0.5 5.4              
Undistributed foreign earnings 1,634.0                
Foreign earnings from the service solution sale to be repatriated in future 318.0                
Foreign earnings portion related to withholding taxes from the service solution sale to be repatriated in future   100.8              
Foreign withholding taxes recorded to discontinued operations   91.8              
Gross unrecognized tax benefits 128.4 108.4 120.4            
Net unrecognized tax benefits 72.9 72.5 103.2            
Portion of unrecognized benefits which, if recognized, would impact future effective tax rates 72.3                
Gross accrued interest 12.4 12.8 16.6            
Net accrued interest 8.6 8.6 12.4            
Gross interest income included in income tax (provision) benefit 0.2 2.9 1.2            
Penalties excluded 7.1 7.1 5.6            
Penalties recorded 0 1.5 0.6            
Reasonably possible amount that unrecognized tax benefits could decrease within next 12 months, low end of range 65.0                
Reasonably possible amount that unrecognized tax benefits could decrease within next 12 months, high end of range 75.0                
Aggregate changes in balance of unrecognized tax benefits                  
Unrecognized tax benefit - opening balance 108.4 120.4 142.7            
Gross increases - tax positions in prior period 0.5 20.6 3.3            
Gross decreases - tax positions in prior period (2.3) (33.9) (23.4)            
Gross increases - tax positions in current period 28.4 11.2 10.9            
Settlements (1.1) (7.1) (0.9)            
Lapse of statute of limitations (5.5) (2.7) (11.5)            
Change due to foreign currency exchange rates   (0.1) (0.7)            
Unrecognized tax benefit - ending balance 128.4 108.4 120.4            
Uncertain Tax Positions and Other Tax Matters                  
Income tax charges related foreign dividends and undistributed earnings that are no longer considered to be indefinitely reinvested   15.4              
Tax expense partially offset with the deconsolidation of dry cooling business in China   6.1              
Income tax charges related to valuation allowances recorded against foreign deferred income tax assets 9.5 (5.4)              
Tax benefit related to audit settlements and statute expirations 6.5 22.3              
Tax benefit related to the research and experimentation credit generated in 2012 4.1                
Income tax benefit associated with the release of the valuation allowance on existing foreign tax credit carryforwards     38.5            
Tax benefits associated with the conclusion of a Canadian appeals process     2.5            
Tax credits related to expansion of power transformer facility in Waukesha, WI     7.7            
Income tax benefit partially offset by federal income taxes recorded in connection with plan to repatriate a portion of the earnings of a foreign subsidiary     $ 6.9            
Maximum period for which impact on state income tax returns of any federal changes remains subject to examination by various states 1 year