XML 60 R45.htm IDEA: XBRL DOCUMENT v3.8.0.1
Acquisitions - Additional Information (Detail) - USD ($)
$ in Millions
 4 Months Ended 12 Months Ended
Sep. 05, 2017
Aug. 08, 2016
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]            
Aggregate cash purchase price, net of cash acquired       $ 43.1 $ 90.8  
Acquired intangible assets, amortization period, in years       12 years    
Operating earnings       $ 577.9 $ 515.0 $ 452.9
Aquasana            
Business Acquisition [Line Items]            
Percentage of ownership interest acquired   100.00%        
Aggregate cash purchase price, net of cash acquired   $ 85.1        
Cash acquired from business acquisition   1.9        
Contingent consideration and holdback   1.7        
Acquisition-related costs   1.2        
Acquired intangible assets   30.0        
Aquasana | Trade Names            
Business Acquisition [Line Items]            
Acquired intangible assets, not subject to amortization   21.5        
Aquasana | Customer Lists            
Business Acquisition [Line Items]            
Acquired intangible assets, subject to amortization   $ 8.3        
Acquired intangible assets, amortization period, in years   10 years        
Aquasana | Patents            
Business Acquisition [Line Items]            
Acquired intangible assets, subject to amortization   $ 0.2        
Acquired intangible assets, amortization period, in years   5 years        
Hague            
Business Acquisition [Line Items]            
Percentage of ownership interest acquired 100.00%          
Aggregate cash purchase price, net of cash acquired $ 43.1          
Cash acquired from business acquisition 4.1          
Contingent consideration and holdback $ 1.5   $ 2.0 $ 2.0    
Contingent consideration, conditions measurement period 2 years          
Acquisition-related costs $ 0.2   0.2      
Acquired intangible assets 12.8          
Revenues     8.6      
Pre tax earnings     2.0      
Operating earnings     $ 2.2      
Hague | Maximum            
Business Acquisition [Line Items]            
Contingent consideration and holdback 2.0          
Hague | Trade Names            
Business Acquisition [Line Items]            
Acquired intangible assets, not subject to amortization 1.1          
Hague | Customer Lists            
Business Acquisition [Line Items]            
Acquired intangible assets, subject to amortization $ 11.7          
Acquired intangible assets, amortization period, in years 18 years