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Use of Estimates (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Accrued Expenses      
Employee benefits $ 214.7 $ 183.0  
Unearned revenue 460.7 469.1  
Warranty 42.1 49.6 45.6
Other 271.7 278.3  
Total 989.2 980.0  
Analysis of product warranty accrual      
Balance at beginning of period 59.7 55.7 46.9
Acquisitions   3.7 7.7
Provisions 30.7 24.7 20.9
Usage (35.6) (24.4) (19.8)
Balance at end of period 54.8 59.7 55.7
Less: Current portion of warranty 42.1 49.6 45.6
Non-current portion of warranty 12.7 10.1 10.1
Allowance for Doubtful Accounts
      
Accounts Receivable Allowances      
Balance at beginning of year 49.9 40.7 43.8
Allowances provided 23.1 26.2 16.0
Write-offs, net of recoveries, credits issued and other (26.7) (17.0) (19.1)
Balance at end of year $ 46.3 $ 49.9 $ 40.7