Schedule of Income Taxes Paid (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Oct. 01, 2010
Income Taxes Paid Net [Line Items]
Federal income taxes paid, net	$ 77.6	$ 70.0	$ 76.0
State income taxes paid, net	9.3	11.9	14.9
Foreign income taxes paid, net	47.7	57.5	46.1
Total	$ 134.6	$ 139.4	$ 137.0