GOODWILL AND INTANGIBLE ASSETS - Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Details) - USD ($) $ in Millions	Apr. 03, 2020	Sep. 27, 2019
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	$ 409.2	$ 408.7
Accumulated Amortization	(139.9)	(120.7)
Net Carrying Amount	269.3	288.0
In-process research and development with indefinite lives	12.3	12.7
Total intangible assets	421.5	421.4
Total intangible assets, net	281.6	300.7
Technologies and patents
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	226.9	226.4
Accumulated Amortization	(98.4)	(85.9)
Net Carrying Amount	128.5	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	(30.4)	(25.7)
Net Carrying Amount	90.7	95.4
Trade names
Finite Lived Intangible Assets [Line Items]
Finite lived intangible assets, gross	55.1	55.1
Accumulated Amortization	(5.0)	(3.0)
Net Carrying Amount	50.1	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