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Related Party Transactions - Schedule of Related Party Transaction Relationship (Details) | 12 Months Ended
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Dec. 31, 2021
Mr. Chen |
Related Party Transaction [Line Items] |
Relationship with the Group | Founder
Xiaomi |
Related Party Transaction [Line Items] |
Relationship with the Group | Shareholder of the Group
Foshan Wanwuhulian Trade Co., Limited |
Related Party Transaction [Line Items] |
Relationship with the Group | Controlled by the Founder

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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. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Related party transaction relationship description. + References No definition available. + Details
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Namespace Prefix: | viot_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=viot_FoshanWanwuhulianTradeCoLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |