GOODWILL AND INTANGIBLE ASSETS - Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Millions	Mar. 30, 2018	Sep. 29, 2017
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	$ 161.9	$ 141.4
Accumulated Amortization	(88.7)	(78.6)
Net Carrying Amount	73.2	62.8
Indefinite intangible assets	8.8	8.8
Total intangible assets	170.7	150.2
Total intangible assets, net	82.0	71.6
Technologies and patents
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	118.0	102.0
Accumulated Amortization	(67.7)	(60.9)
Net Carrying Amount	50.3	41.1
Customer contracts and supplier relationship
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	38.2	33.9
Accumulated Amortization	(16.4)	(14.3)
Net Carrying Amount	21.8	19.6
Other
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	5.7	5.5
Accumulated Amortization	(4.6)	(3.4)
Net Carrying Amount	$ 1.1	$ 2.1