Indebtedness (Schedule of Borrowings) (Details) (USD $) In Millions, unless otherwise specified	Jun. 14, 2014	Dec. 28, 2013	Jun. 15, 2013
Debt Instrument [Line Items]
Capital lease obligations	$ 0.7	$ 0	$ 0
Total interest-bearing debt	1,131.3	1,150.0	1,184.7
Less: current maturities of long-term debt	48.4	53.3	37.1
Long-term debt, less current maturities	1,082.9	1,096.7	1,147.6
Term Loan A [Member] | October Tenth Two Thousand Eighteen [Member]
Debt Instrument [Line Items]
Long-term debt	755.6	775.0	536.3
Term Loan B [Member] | October Ninth Two Thousand Nineteenth [Member]
Debt Instrument [Line Items]
Long-term debt	0	0	273.4
Public Bonds [Member] | October Fifteen Two Thousand Twenty [Member]
Debt Instrument [Line Items]
Long-term debt	$ 375.0	$ 375.0	$ 375.0