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Accrued Product Warranty (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 27, 2013
Sep. 28, 2012
Warranty Liability [Line Items]    
Accrued product warranty, at beginning of period $ 52.8 $ 50.1
Charged to cost of revenues 57.7 58.1
Actual product warranty expenditures (57.3) (55.4)
Accrued product warranty, at end of period $ 53.2 $ 52.8