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
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018
Amortization of pension items [Abstract]
Pre-tax amount	$ 2.2	$ 6.2	$ 6.6	$ 11.1
Tax	(0.6)	(1.6)	(1.7)	(2.7)
Net of tax	$ 1.6	$ 4.6	$ 4.9	$ 8.4