Comprehensive Income, Reclassification Out of Accumulated Other Comprehensive Loss (Details) - Pension Costs [Member] - Reclassification out of Accumulated Other Comprehensive Loss [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 03, 2021	Sep. 27, 2020	Oct. 03, 2021	Sep. 27, 2020
Amortization of pension items [Abstract]
Pre-tax amount	$ 2.9	$ 5.1	$ 11.9	$ 14.8
Tax	(0.7)	(1.4)	(2.9)	(3.7)
Net of tax	$ 2.2	$ 3.7	$ 9.0	$ 11.1