COMMITMENTS AND CONTINGENCIES - Accrued Product Warranty (Detail) - USD ($) $ in Millions	3 Months Ended
	Jan. 01, 2016	Jan. 02, 2015
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Accrued product warranty, at beginning of period	$ 45.9	$ 49.3
Charged to cost of revenues	12.2	9.4
Actual product warranty expenditures	(12.0)	(13.0)
Accrued product warranty, at end of period	$ 46.1	$ 45.7