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Accrued Product Warranty (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
Warranty Liability [Line Items]
Accrued product warranty, at beginning of period	$ 52.8	$ 50.1
Charged to cost of revenues	25.8	23.3
Actual product warranty expenditures	(27.2)	(24.8)
Accrued product warranty, at end of period	$ 51.4	$ 48.6

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

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