Product Warranties - Product Warranty (Detail) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Balance at Beginning of Period $ 6.3 $ 9.3
Provisions 2.9 4.3
Settlements/ Adjustments (3.5) (5.1)
Balance at End of Period $ 5.7 $ 8.5