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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Statement of Comprehensive Income [Abstract] |  |  |
Net of income taxes | $ 0.1 | $ 0.0 | $ 0.0

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount represents the other comprehensive income loss pension and net of income taxes. + References No definition available. + Details
Name: | vrt_OtherComprehensiveIncomeLossPensionAndNetOfIncomeTaxes
Namespace Prefix: | vrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration