Pension Plans and Postretirement Benefits (Funded Status) (Details) - USD ($) $ in Millions	Dec. 29, 2019	Dec. 30, 2018
Amounts recognized in the consolidated balance sheets:
Assets for Plan Benefits, Defined Benefit Plan	$ 71.8	$ 88.2
Pension Benefits | United States
Funded Status and Amounts Recognized in Balance Sheets [Abstract]
Funded status	30.0	48.6
Amounts recognized in the consolidated balance sheets:
Assets for Plan Benefits, Defined Benefit Plan	71.8	88.2
Accrued pension obligation long-term	(33.8)	(31.8)
Accrued pension obligation short-term	(2.7)	(2.6)
Other long-term liabilities	(5.3)	(5.2)
Accrued benefit cost	30.0	48.6
Amounts recognized in accumulated other comprehensive loss:
Net prior service cost (credit)	(30.6)	(18.6)
Net loss	431.7	417.6
Net amount recognized, before tax effect	401.1	399.0
Pension Benefits | Foreign Plan
Funded Status and Amounts Recognized in Balance Sheets [Abstract]
Funded status	(12.3)	(8.9)
Amounts recognized in the consolidated balance sheets:
Assets for Plan Benefits, Defined Benefit Plan	0.0	0.0
Accrued pension obligation long-term	(11.7)	(8.6)
Accrued pension obligation short-term	(0.6)	(0.3)
Other long-term liabilities	0.0	0.0
Accrued benefit cost	(12.3)	(8.9)
Amounts recognized in accumulated other comprehensive loss:
Net prior service cost (credit)	(0.4)	0.8
Net loss	7.8	6.4
Net amount recognized, before tax effect	$ 7.4	$ 7.2