| Document and Entity Information | Jun. 15, 2023 |
| Cover [Abstract] | |
| Amendment Flag | true |
| Entity Central Index Key | 0001827075 |
| Document Type | 8-K/A |
| Document Period End Date | Jun. 15, 2023 |
| Entity Registrant Name | CVENT HOLDING CORP. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39709 |
| Entity Tax Identification Number | 98-1560055 |
| Entity Address, Address Line One | 1765 Greensboro Station Place |
| Entity Address, Address Line Two | 7th Floor |
| Entity Address, City or Town | Tysons |
| Entity Address, State or Province | VA |
| Entity Address, Postal Zip Code | 22102 |
| City Area Code | (703) |
| Local Phone Number | 226-3500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.0001 par value |
| Trading Symbol | CVT |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Description | This Form 8-K/A is filed as an amendment (the “Amendment”) to the Current Report on Form 8-K filed by Cvent Holding Corp. (the “Company”) on June 15, 2023 (the “Original Current Report”). It has come to the Company’s attention that the link to that certain Agreement and Plan of Merger, dated as of March 14, 2023 (the “Merger Agreement”), by and among the Company, Capstone Borrower, Inc., a Delaware corporation (“Parent”), and Capstone Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Parent, included in the Original Current Report is inaccurate. The correct web link is set forth below under Exhibit 2.1 attached to this Amendment. Other than the corrected web link, there are no other changes to the Original Form 8-K. |
