Face (par) amount of debt instrument at time of issuance.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- 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.

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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Balance Type:	debit
Period Type:	duration

- Definition

Debt Instrument, Cash Interest Rate, Stated Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	vrt_
Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Debt Instrument, PIK Interest Rate, Stated Percentage

+ References

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- Definition

Payments For Early Payment Of Notes, Redemption Premium

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- Details

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Debt - Redemption of Prior Notes Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Feb. 07, 2020	Jan. 31, 2020	Dec. 31, 2019	Oct. 17, 2016
Debt Instrument [Line Items]
Stated interest rate						9.25%
Redemption premium	$ 75,000,000.0	$ 0
Other Deductions Net
Debt Instrument [Line Items]
Write off of deferred debt issuance cost	$ 34,300,000
12.00%/13.00% Senior PIK Toggle Notes due 2022 \| Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount				$ 500,000,000.0
Cash interest rate, stated percentage					12.00%
PIK interest rate, stated percentage					13.00%
9.250% Notes due 2024 \| Notes Payable to Banks
Debt Instrument [Line Items]
Aggregate principal amount				$ 750,000,000.0
Stated interest rate				9.25%
Principal amount repurchased			$ 500,000
10.00% Notes due 2024 \| Notes Payable to Banks
Debt Instrument [Line Items]
Aggregate principal amount				$ 120,000,000.0
Stated interest rate					10.00%