RESTRUCTURING - Restructuring Charges Incurred (Details) - USD ($) $ in Millions	12 Months Ended
Oct. 01, 2021	Oct. 02, 2020	Sep. 27, 2019
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation			$ 4.5
Santa Clara Relocation, Workforce Reduction and Other Restructuring Activities
Restructuring Cost and Reserve [Line Items]
Inventory write-down	$ 0.0	$ 1.3	3.1
Intangible assets impairment	0.0	0.0	4.8
Accelerated depreciation	0.2	2.9	4.5
Severance costs	0.6	5.7	6.2
Facility closure costs	0.2	3.6	0.3
Total restructuring charges	$ 1.0	$ 13.5	$ 18.9

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

Name:	us-gaap_BusinessExitCosts1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan and expenses resulting from the write-down of assets. Excludes expenses related to a business combination, a discontinued operation or an asset retirement obligation.

+ References

+ Details

Name:	us-gaap_RestructuringCostsAndAssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of accelerated depreciation charged against earnings associated with exit from or disposal of business activities or restructuring plan.

+ References

No definition available.

+ Details

Name:	us-gaap_RestructuringReserveAcceleratedDepreciation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

+ Details

Name:	us-gaap_SeveranceCosts1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Restructuring And Related Cost, Impairment Of Intangible Assets, Finite-Lived

+ References

No definition available.

+ Details

Name:	vrex_RestructuringAndRelatedCostImpairmentOfIntangibleAssetsFiniteLived
Namespace Prefix:	vrex_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Restructuring And Related Cost, Inventory Write-Down

+ References

No definition available.

+ Details

Name:	vrex_RestructuringAndRelatedCostInventoryWriteDown
Namespace Prefix:	vrex_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_RestructuringPlanAxis=vrex_SantaClaraRelocationWorkforceReductionAndOtherRestructuringActivitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: