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OTHER COSTS AND EXPENSES - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Jan. 02, 2021
Sep. 26, 2020
Jun. 27, 2020
Mar. 28, 2020
Dec. 28, 2019
Sep. 28, 2019
Jun. 29, 2019
Mar. 30, 2019
Jan. 02, 2021
Dec. 28, 2019
Dec. 29, 2018
Business Acquisition [Line Items]                      
Pre-tax acquisition charges $ 80.0 $ 89.0 $ 169.0 $ 62.0 $ 164.0 $ 114.0 $ 33.0 $ 52.0 $ 400.0 $ 363.0  
Environmental remediation costs, reserve $ 46.7       $ 57.8       46.7 57.8  
Research and development costs                 211.0 255.2 $ 275.8
Consolidated Aerospace Manufacturing (CAM)                      
Business Acquisition [Line Items]                      
Special termination benefits cost                 16.1    
Unamortized loss on cash flow swap termination                 19.6    
Release of contingent consideration liability                 55.3    
COVID-19                      
Business Acquisition [Line Items]                      
Restructuring Costs                 185.0    
Other Expense                      
Business Acquisition [Line Items]                      
Pre-tax acquisition charges                 $ 28.6 $ 30.2 30.4
Centredale Site                      
Business Acquisition [Line Items]                      
Environmental remediation costs, reserve                     $ 77.7