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Retirement Benefit Plans (Expected Future Payments) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Defined Benefit Plan Disclosure [Line Items]      
Cost of savings, thrift and profit-sharing plans $ 6.7 $ 6.5 $ 6.5
Estimated Future Benefit Payments [Abstract]      
2019, Benefit plans 17.3    
2020, Benefit plans 12.6    
2021, Benefit plans 13.7    
2022, Benefit plans 13.7    
2023, Benefit plans 13.7    
2024-2028, Benefit plans 68.5    
Pension Benefits [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Estimated contributions in next fiscal year 11.3    
Estimated Future Benefit Payments [Abstract]      
2019, Benefit plans 16.0    
2020, Benefit plans 11.4    
2021, Benefit plans 12.6    
2022, Benefit plans 12.6    
2023, Benefit plans 12.7    
2024-2028, Benefit plans 64.6    
Postretirement Benefits [Member]      
Estimated Future Benefit Payments [Abstract]      
2019, Benefit plans 1.3    
2020, Benefit plans 1.2    
2021, Benefit plans 1.1    
2022, Benefit plans 1.1    
2023, Benefit plans 1.0    
2024-2028, Benefit plans 3.9    
Postretirement Benefits [Member] | UNITED STATES      
Defined Benefit Plan Disclosure [Line Items]      
Estimated contributions in next fiscal year $ 1.3