The Company and Its Significant Accounting Policies Revenue Recognition (Details)	12 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 29, 2013
Revenue Recognition [Abstract]
Revenue from Service	less than 10%	less than 10%	less than 10%
Estimated period of license benefit over which license fees are recognized	5 to 15 years