SEGMENT INFORMATION - Income Statement Information (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 30, 2022
Segment Reporting Information
Revenues, net	$ 811.0	$ 893.4	$ 859.4
Gross profit	256.9	290.3	283.5
Total operating expenses	224.8	213.2	195.3
Interest and other expense, net	(27.1)	(45.8)	(43.7)
Income before taxes	5.0	31.3	44.5
Income tax expense (benefit)	52.2	(17.4)	13.7
Net (loss) income	(47.2)	48.7	30.8
Less: Net income attributable to noncontrolling interests	0.5	0.5	0.5
Net (loss) income attributable to Varex	(47.7)	48.2	30.3
Medical
Segment Reporting Information
Revenues, net	581.7	673.3	674.7
Gross profit	176.7	205.5	210.5
Industrial
Segment Reporting Information
Revenues, net	229.3	220.1	184.7
Gross profit	$ 80.2	$ 84.8	$ 73.0