CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenues, net	$ 811.0	$ 893.4	$ 859.4
Cost of revenues	554.1	603.1	575.9
Gross profit	256.9	290.3	283.5
Operating expenses:
Research and development	87.0	84.8	77.0
Selling, general and administrative	137.8	128.4	118.3
Total operating expenses	224.8	213.2	195.3
Operating income	32.1	77.1	88.2
Interest income	7.3	3.7	0.4
Interest expense	(30.2)	(29.3)	(39.8)
Other expense, net	(4.2)	(20.2)	(4.3)
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
Net (loss) income per common share attributable to Varex
Basic (in USD per share)	$ (1.17)	$ 1.20	$ 0.76
Diluted (in USD per share)	$ (1.17)	$ 1.08	$ 0.73
Weighted average common shares outstanding
Basic (in shares)	40.8	40.3	39.8
Diluted (in shares)	40.8	50.3	41.6