Annual report pursuant to Section 13 and 15(d)

Acquisitions (Details)

v3.8.0.1
Acquisitions (Details) - USD ($)
$ in Millions
 12 Months Ended
Sep. 01, 2017
Aug. 31, 2016
Jan. 20, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]            
Business Combination, Consideration Transferred       $ 15.5 $ 276.1  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill       4.6 118.7  
Goodwill       425.3 413.8 $ 298.7
Goodwill, Acquired During Period       5.5 119.2  
Trade Names [Member]            
Business Acquisition [Line Items]            
Indefinite-Lived Intangible Assets Acquired       1.4 50.9  
Customer Relationships [Member]            
Business Acquisition [Line Items]            
Finite-Lived Intangible Assets Acquired       $ 3.2 $ 61.5  
Useful Life       15 years    
Customer Relationships [Member] | Minimum [Member]            
Business Acquisition [Line Items]            
Useful Life         11 years  
Customer Relationships [Member] | Maximum [Member]            
Business Acquisition [Line Items]            
Useful Life         16 years  
Patents and Proprietary Technology [Member]            
Business Acquisition [Line Items]            
Finite-Lived Intangible Assets Acquired         $ 6.3  
Useful Life         5 years  
Lankhorst Taselaar [Member]            
Business Acquisition [Line Items]            
Business Acquisition, Percentage of Voting Interests Acquired 100.00%          
Business Combination, Consideration Transferred $ 15.5          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill 4.6          
Goodwill 5.5          
Lankhorst Taselaar [Member] | Trade Names [Member]            
Business Acquisition [Line Items]            
Indefinite-Lived Intangible Assets 1.4          
Lankhorst Taselaar [Member] | Customer Relationships [Member]            
Business Acquisition [Line Items]            
Finite-Lived Intangible Assets $ 3.2          
Useful Life 15 years          
Indoor Cycling Group [Member]            
Business Acquisition [Line Items]            
Business Acquisition, Percentage of Voting Interests Acquired   100.00%        
Business Combination, Consideration Transferred   $ 54.1        
Payments to Acquire Businesses, Gross   51.7        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill   20.4        
Goodwill   28.6        
Indoor Cycling Group [Member] | Trade Names [Member]            
Business Acquisition [Line Items]            
Indefinite-Lived Intangible Assets   6.0        
Indoor Cycling Group [Member] | Customer Relationships [Member]            
Business Acquisition [Line Items]            
Finite-Lived Intangible Assets   $ 11.2        
Useful Life   11 years        
Indoor Cycling Group [Member] | Patents and Proprietary Technology [Member]            
Business Acquisition [Line Items]            
Finite-Lived Intangible Assets   $ 3.2        
Useful Life   5 years        
Cybex [Member]            
Business Acquisition [Line Items]            
Business Acquisition, Percentage of Voting Interests Acquired     100.00%      
Accounts and Notes Receivable     $ 22.0      
Inventory     13.9      
Goodwill     88.4      
Property, Plant and Equipment     35.2      
Other Assets     3.7      
Total Assets Acquired     248.6      
Total Liabilities Assumed     51.7      
Net Cash Consideration Paid     196.9      
Cybex [Member] | Trade Names [Member]            
Business Acquisition [Line Items]            
Indefinite-Lived Intangible Assets     38.6      
Cybex [Member] | Customer Relationships [Member]            
Business Acquisition [Line Items]            
Finite-Lived Intangible Assets     $ 43.7      
Useful Life     16 years      
Cybex [Member] | Patents and Proprietary Technology [Member]            
Business Acquisition [Line Items]            
Finite-Lived Intangible Assets     $ 3.1      
Useful Life     5 years