Pension Plans and Postretirement Benefits (Funded Status) (Details) (USD $) In Millions, unless otherwise specified	Dec. 28, 2014	Dec. 29, 2013
Pension Benefits Domestic Plans
Funded Status and Amounts Recognized in Balance Sheets [Abstract]
Funded status	$ 79.1	$ 217.4
Amounts recognized in the consolidated balance sheets:
Prepaid pension asset/(accrued pension obligation) (long-term)	86.1	222.0
Accrued postretirement benefits (short-term)	(1.8)	(1.5)
Other liabilities	(5.2)	(3.1)
Net amount recognized	79.1	217.4
Amounts recognized in accumulated other comprehensive loss:
Unrecognized prior service credit	(27.0)	(33.1)
Unrecognized net loss	379.6	243.5
Net amount recognized	352.6	210.4
Pension Benefits Foreign Plans
Funded Status and Amounts Recognized in Balance Sheets [Abstract]
Funded status	(13.5)	(8.2)
Amounts recognized in the consolidated balance sheets:
Prepaid pension asset/(accrued pension obligation) (long-term)	(13.5)	(8.2)
Accrued postretirement benefits (short-term)	0	0
Other liabilities	0	0
Net amount recognized	(13.5)	(8.2)
Amounts recognized in accumulated other comprehensive loss:
Unrecognized prior service credit	(0.1)	(0.1)
Unrecognized net loss	12.9	3.7
Net amount recognized	12.8	3.6
Postretirement Plans
Funded Status and Amounts Recognized in Balance Sheets [Abstract]
Funded status	(12.8)	(11.9)
Amounts recognized in the consolidated balance sheets:
Accrued postretirement benefits (long-term)	(11.6)	(10.3)
Accrued postretirement benefits (short-term)	(1.2)	(1.6)
Net amount recognized	(15.9)	(17.3)
Amounts recognized in accumulated other comprehensive loss:
Unrecognized prior service credit	0.1	(0.2)
Unrecognized net loss	(3.1)	(5.2)
Accumulated other comprehensive income	(3.1)	(5.4)
Net amount recognized	$ (15.9)	$ (17.3)