Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Base Rate

+ References

No definition available.

+ Details

Name:	vrt_DebtInstrumentBaseRate
Namespace Prefix:	vrt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Global Availability As A Percent Of Aggregate Commitments, Subject To Minimum Consolidated Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

Name:	vrt_DebtInstrumentGlobalAvailabilityAsAPercentOfAggregateCommitmentsSubjectToMinimumConsolidatedFixedChargeCoverageRatio
Namespace Prefix:	vrt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Global Availability Of Aggregate Commitments Subject To Minimum Consolidated Fixed Charge Coverage Ratio

+ References

No definition available.

+ Details

Name:	vrt_DebtInstrumentGlobalAvailabilityOfAggregateCommitmentsSubjectToMinimumConsolidatedFixedChargeCoverageRatio
Namespace Prefix:	vrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Ratio Of Global Availability Of Aggregate Commitments

+ References

No definition available.

+ Details

Name:	vrt_DebtInstrumentRatioOfGlobalAvailabilityOfAggregateCommitments
Namespace Prefix:	vrt_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Accordion Feature, Higher Borrowing Capacity Option

+ References

No definition available.

+ Details

Name:	vrt_LineOfCreditFacilityAccordionFeatureHigherBorrowingCapacityOption
Namespace Prefix:	vrt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=vrt_ABLRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_FederalFundsEffectiveSwapRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=vrt_OneMonthLondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_VariableRateAxis=vrt_OneTwoThreeOrSixMonthLIBOROrIfAgreedByAllTermLenders12MonthLIBOROrIfAgreedToByTheTermAgentAnyShorterPeriodSelectedAtTheOptionOfTheBorrowerMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_VariableRateAxis=vrt_ApplicableMarginsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_BridgeLoanMember
Namespace Prefix:
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Debt - ABL Revolving Credit Facility (Details) - USD ($)	Mar. 02, 2020	Nov. 30, 2016	Sep. 30, 2020
Base Rate \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate		2.00%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 455,000,000.0
Line of credit facility, accordion feature	$ 600,000,000.0
Line of credit facility, unused capacity, commitment fee percentage	0.25%
Global Availability as a percent of aggregate commitments, subject to minimum Consolidated Fixed Charge Coverage Ratio	10.00%
Global Availability of aggregate commitments, subject to minimum Consolidated Fixed Charge Coverage Ratio	$ 30,000,000.0
Ratio of Global Availability of aggregate commitments	100.00%
Line of credit facility, remaining borrowing capacity			$ 333,500,000
Letters of credit outstanding			$ 21,500,000
Weighted average borrowing rate			1.70%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| Minimum
Debt Instrument [Line Items]
Debt instrument, base rate	0.25%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| Maximum
Debt Instrument [Line Items]
Debt instrument, base rate	0.75%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| Fed Funds Effective Rate Overnight Index Swap Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| One Month London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| One-, Two-, Three- Or Six-Month LIBOR Or, If Agreed By All Term Lenders, 12-month LIBOR Or, If Agreed To By The Term Agent, Any Shorter Period Selected At The Option Of The Borrower \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.25%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| One-, Two-, Three- Or Six-Month LIBOR Or, If Agreed By All Term Lenders, 12-month LIBOR Or, If Agreed To By The Term Agent, Any Shorter Period Selected At The Option Of The Borrower \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Revolving Credit Facility \| ABL Revolving Credit Facility \| Line of Credit \| Applicable Margins \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate	1.00%
Letter of Credit \| ABL Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 200,000,000.0
Bridge Loan \| ABL Revolving Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 75,000,000.0