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Use of Estimates (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Accrued Expenses      
Employee benefits $ 83.8 $ 96.2  
Unearned revenue [1] 193.3 170.9  
Warranty 20.3 20.8 $ 22.2
Other [2] 131.6 152.3  
Total 403.7 440.2  
Analysis of product warranty accrual      
Balance at beginning of year 37.5 34.7 36.8
Provisions 18.8 21.4 17.8
Usage (16.1) (17.8) (20.1)
Currency translation adjustment (0.6) (0.8) 0.2
Balance at end of year 39.6 37.5 34.7
Less: Current portion of warranty 20.3 20.8 22.2
Non-current portion of warranty 19.3 16.7 12.5
Allowance for Doubtful Accounts      
Allowance for Doubtful Accounts Receivable [Roll Forward]      
Balance at beginning of year 14.8 24.7 26.9
Allowances provided 14.1 16.2 19.4
Write-offs, net of recoveries, credits issued and other (18.7) (26.1) (21.6)
Balance at end of year 10.2 14.8 $ 24.7
Liabilities from Continuing Operations and Disposal Group, Held-for-sale, Not Discontinued Operations      
Accrued Expenses      
Total [3] 429.0 $ 440.2  
Disposal Group, Held-for-sale | Dry Cooling Business | Liabilities Held For Sale Current      
Accrued Expenses      
Total $ 25.3    
[1] Unearned revenue includes billings in excess of costs and estimated earnings on uncompleted contracts accounted for under the percentage-of-completion method of revenue recognition, customer deposits and unearned amounts on service contracts.
[2] Other consists of various items including, among other items, accrued legal costs, interest, restructuring costs and dividends payable, none of which is individually material.
[3] The balance at December 31, 2015 includes $25.3 related to our dry cooling business. As indicated in Note 1, on November 20, 2015, we entered into an agreement to sell the dry cooling business. As a result, 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.