GOODWILL AND INTANGIBLE ASSETS - Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Millions	Jan. 03, 2020	Sep. 27, 2019
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	$ 408.7	$ 408.7
Accumulated Amortization	(130.5)	(120.7)
Net Carrying Amount	278.2	288.0
In-process research and development with indefinite lives	12.7	12.7
Total intangible assets	421.4	421.4
Total intangible assets, net	290.9	300.7
Technologies and patents
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	226.4	226.4
Accumulated Amortization	(92.2)	(85.9)
Net Carrying Amount	134.2	140.5
Customer contracts, supplier relationships, and partner relationships
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	121.1	121.1
Accumulated Amortization	(28.1)	(25.7)
Net Carrying Amount	93.0	95.4
Trade names
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	55.1	55.1
Accumulated Amortization	(4.1)	(3.0)
Net Carrying Amount	51.0	52.1
Other
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	6.1	6.1
Accumulated Amortization	(6.1)	(6.1)
Net Carrying Amount	$ 0.0	$ 0.0