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Goodwill and Other Intangible Assets (Tables)
 3 Months Ended
Apr. 04, 2021
Goodwill and Other Intangible Assets [Abstract]  
Intangible Assets Subject to Amortization
Intangible assets subject to amortization as of April 4, 2021 and December 31, 2020 were as follows:

        
April 4, 2021
    
December 31, 2020
  
(millions of dollars)
  
Weighted Average
Useful Life
(Years)
    
Gross
Carrying
Amount
    
Accumulated
Amortization
    
Gross
Carrying
Amount
    
Accumulated
Amortization
  
                               
Tradenames
    
35
    
$
203.9
    
$
40.1
    
$
203.9
    
$
38.6
  
Technology
    
13
      
18.8
      
10.0
      
18.8
      
9.6
  
Patents and trademarks
    
19
      
6.4
      
6.2
      
6.4
      
6.1
  
Customer relationships
    
22
      
25.8
      
6.1
      
26.9
      
5.9
  
     
32
    
$
254.9
    
$
62.4
    
$
256.0
    
$
60.2