Accumulated Other Comprehensive Loss (Schedule of Reclassifications out of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 28, 2019	Jun. 29, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Total reclassifications for the period	$ 0.0	$ (0.9)
Reclassification out of Accumulated Other Comprehensive Loss
Reclassification Adjustment out of Accumulated Other Comprehensive Loss [Line Items]
Amortization of unrealized loss on derivatives, net of tax	0.7	0.5
Amortization of pension and post-retirement plans, net actuarial loss	0.3	0.3
Amortization of pension and post-retirement plans, prior service credit	(1.0)	(1.0)
Plan settlements	$ 0.0	$ (0.7)