Retirement Plans (Schedule Of Amounts Recognized Defined Benefit Pension Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Dec. 31, 2010
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Pension and Other Post Retirement Benefits	$ 39.7	$ 69.2
Pension plan balance sheet total	(42.2)	(71.7)
Other Accrued Expenses	2.5	2.5
Net actuarial loss	0	0	1.1
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0.2	0.2		0.2
Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Net Gains Losses Tax	36.0	64.9
Prior service cost	(16.0)	9.9	7.7
Pension And Other Postretirement Benefit Plans Accumulated Other Comprehensive Income Loss Net Prior Service Cost Credit Tax	1.6	1.8
Total	$ 37.6	$ 66.7