GOODWILL AND INTANGIBLE ASSETS - Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Millions	Mar. 29, 2019	Sep. 28, 2018
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	$ 186.7	$ 191.1
Accumulated Amortization	(104.7)	(98.8)
Net Carrying Amount	82.0	92.3
In-process research and development with indefinite lives	8.8	8.8
Total intangible assets	195.5	199.9
Total intangible assets, net	90.8	101.1
Technologies and patents
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	136.2	139.6
Accumulated Amortization	(76.8)	(73.9)
Net Carrying Amount	59.4	65.7
Customer contracts and supplier relationship
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	44.4	44.9
Accumulated Amortization	(22.0)	(19.1)
Net Carrying Amount	22.4	25.8
Other
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	6.1	6.6
Accumulated Amortization	(5.9)	(5.8)
Net Carrying Amount	$ 0.2	$ 0.8