Other (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			3 Months Ended	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011	Dec. 30, 2012 Other Expense [Member]	Dec. 30, 2012 Other Expense [Member]	Dec. 25, 2011 Other Expense [Member]
Other Expense [Line Items]
Severance costs	$ 12.4	$ 12.3	$ 10.0
Severance liability	10.3	15.9
Other expense, legal settlement				2.6	2.6
Other expense, retirement and consulting agreement						$ 4.5