Taxes on Earnings - Schedule of Effective Income Tax Rate (Detail)	12 Months Ended
	Oct. 02, 2015	Sep. 26, 2014	Sep. 27, 2013
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%
State and local taxes, net of federal tax benefit	0.80%	0.80%	1.30%
Non-U.S. income taxed at different rates, net	(9.20%)	(5.20%)	(5.60%)
Other	(0.90%)	(0.90%)	(2.30%)
Effective tax rate	25.70%	29.70%	28.40%