Shareholders' Equity (Details) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Sep. 29, 2012 Rate	Oct. 01, 2011	Oct. 23, 2012
Stockholders' Equity Note [Abstract]
Common stock repurchased		$ 200.0
Treasury stock repurchased, shares		6,308
Common stock repurchased, average price		$ 31.69
Maximum share repurchase amount approved			$ 50
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock purchase rights under Rights Agreement	125.00
Minimum percentage of common stock required for Rights exercisable	20.00%