Schedule of Reconciliation of Federal Income Tax Rate (Detail)	12 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Oct. 01, 2010
Schedule Of Effective Tax Rates Line Items [Line Items]
Federal statutory income tax rate	35.00%	35.00%	35.00%
State and local taxes, net of federal tax benefit	1.30%	2.50%	2.20%
Non-U.S. income taxed at different rates, net	(5.90%)	(3.30%)	(4.60%)
Resolution of tax contingencies due to lapses of statutes of limitations	(1.80%)	(2.80%)	(0.10%)
Other	(0.30%)	(0.80%)	(1.50%)
Effective tax rate	28.30%	30.60%	31.00%