Accumulated Other Comprehensive Income (Schedule of Reclassifications out of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2018	Mar. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period	$ (0.1)	$ 35.5
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amortization of unrealized loss on derivatives, before tax	0.4	0.2
Amortization of unrealized loss on derivatives, tax	0.0	0.0
Amortization of unrealized loss on derivatives, net of tax	0.4	0.2
Amortization of pension and post-retirement plans, net actuarial loss	0.1	1.5
Amortization of pension and post-retirement plans, prior service credit	(0.5)	(0.6)
Divestiture of discontinued operations	0.0	(3.1)
Plan settlements	(0.1)	69.2
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, before Tax	(0.5)	67.0
Amortization of pension and post-retirement plans, tax	0.0	(27.0)
Amortization of pension and post-retirement plans, net of tax	(0.5)	40.0
Currency translation	$ 0.0	$ (4.7)