Cover Page - USD ($) $ in Millions	12 Months Ended
Cover Page - USD ($) $ in Millions	Dec. 31, 2022	Apr. 17, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Registrant Name	CVENT HOLDING CORP.
Entity Central Index Key	0001827075
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 268.3
ICFR Auditor Attestation Flag	true
Entity Common Stock, Shares Outstanding		491,516,516
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Title of 12(b) Security	Common stock, par value $0.0001 per share
Trading Symbol	CVT
Security Exchange Name	NASDAQ
Entity File Number	001-39709
Entity Incorporation, State or Country Code	DE
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
Document Annual Report	true
Document Transition Report	false
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Washington, District of Columbia
Amendment Description	This Amendment No. 1 on Form 10-K/A (this “Amendment”) amends our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, originally filed with the Securities and Exchange Commission (the “SEC”) on March 14, 2023 (the “Original Form 10-K”). We are filing this Amendment pursuant to General Instruction G(3) of Form 10-K to include the information required by Part III of Form 10-K that we did not include in the Original Form 10-K, as we do not intend to file a definitive proxy statement for an annual meeting of stockholders within 120 days of the end of our fiscal year ended December 31, 2022. In addition, in connection with the filing of this Amendment and pursuant to the rules of the SEC, we are including with this Amendment new certifications of our principal executive officer and principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Item 15 of Part IV has also been amended to reflect the filing of these new certifications. Except as described above, no other changes have been made to the Original Form 10-K. The Original Form 10-K continues to speak only as of the date of the Original Form 10-K, and we have not updated the disclosures contained therein to reflect any events which occurred subsequent to the filing of the Original Form 10-K.In this Annual Report, the terms the “Company,” “Cvent,” “we,” “us,” and “our” refer to Cvent Holding Corp. and its subsidiaries, unless the context indicates otherwise.On December 8, 2021, we consummated the business combination (the “Reverse Recapitalization Transaction”) contemplated by the Business Combination Agreement, dated July 23, 2021, by and among Dragoneer Growth Opportunities Corp. II., a Cayman Islands exempted company and the predecessor company of the surviving company following the Reverse Recapitalization Transaction (“Dragoneer”), Papay Topco, Inc., a Delaware corporation (“Legacy Cvent”) and the remaining parties thereto, pursuant to which, among other things, each share and equity award of Legacy Cvent was exchanged for shares common stock of the Company or comparable equity awards that are settled or are exercisable for shares common stock of the Company, as applicable, based on an implied Legacy Cvent equity value of $4,467,973,959.

CVENT HOLDING CORP. 10-K/A