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
Mar. 29, 2020	Mar. 31, 2019
Amortization of pension items [Abstract]
Pre-tax amount	$ 2.7	$ 2.2
Tax	(0.6)	(0.6)
Net of tax	$ 2.1	$ 1.6

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

Mar. 29, 2020

Mar. 31, 2019

Amortization of pension items [Abstract]

Pre-tax amount

$ 2.7

$ 2.2

Tax

(0.6)

Net of tax

$ 2.1

$ 1.6