Shareholders' Equity (Narrative) (Details) - shares	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Class of Stock
Number of common shares issued reflects conversion of Class B to Class A	11,087	14,471	37,936
Preferred stock, shares authorized	10,000,000
Class A Common Stock
Class of Stock
Common stock voting rights	one-tenth
Minimum percentage of the board of directors to be elected by class of shares	25.00%
Offering and sale of common stock	43,638,618	43,627,531
Class B Common Stock
Class of Stock
Common stock voting rights	one
Offering and sale of common stock	7,641,095	7,652,182