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Business Combinations (Schedule Of Estimated Future Amortization Expense) (Detail) - USD ($)
$ in Millions
Oct. 02, 2020
Jan. 03, 2020
Business Combinations [Abstract]    
2020 (Remaining) $ 37.8  
2021 138.1  
2022 118.9  
2023 105.6  
2024 80.1  
Thereafter 129.6  
Total $ 610.1 $ 678.7