Derivative Instruments (Schedule of Net Losses on Gas Commodity Swap Contracts) (Details) (Cash Fow Hedges, Designated as Hedging Instrument, Gas Commodity Swap Contract, USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Net losses on commodity swap contracts	$ (1.1)	$ (3.2)	$ (3.2)
Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Net losses on commodity swap contracts	(0.3)	(0.9)	(0.8)
Selling, general and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Net losses on commodity swap contracts	$ (0.8)	$ (2.3)	$ (2.4)