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Product Warranties (Summary Of Activity In Warranty Accrual) (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Movement in Standard Product Warranty Accrual [Roll Forward]    
Warranty accrual at beginning of period $ 25,537 $ 25,848
Warranties issued during current period 3,365 4,757
Adjustments to pre-existing warranties (91) (70)
Reductions for settling warranties (4,371) (2,915)
Foreign currency translation (183) 128
Warranty accrual at end of period $ 24,257 $ 27,748