SEGMENT INFORMATION (Details) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 29, 2019 USD ($)	Mar. 30, 2018 USD ($)	Mar. 29, 2019 USD ($) segment	Mar. 30, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			2
Revenues	$ 195.8	$ 201.2	$ 381.5	$ 377.4
Gross margin	64.4	70.1	124.4	131.6
Total operating expenses	49.9	52.9	99.5	100.9
Interest and other income (expenses), net	(6.7)	(1.5)	(13.0)	(7.9)
Earnings before taxes	7.8	15.7	11.9	22.8
Taxes (benefit) on earnings	1.9	3.4	3.0	(1.1)
Net earnings	5.9	12.3	8.9	23.9
Less: Net earnings attributable to noncontrolling interests	0.1	0.1	0.1	0.3
Net earnings attributable to Varex	5.8	12.2	8.8	23.6
Operating Segments | Medical
Segment Reporting Information [Line Items]
Revenues	148.9	158.5	292.8	297.7
Gross margin	46.1	53.5	91.2	99.9
Operating Segments | Industrial
Segment Reporting Information [Line Items]
Revenues	46.9	42.7	88.7	79.7
Gross margin	$ 18.3	$ 16.6	$ 33.2	$ 31.7