| Document and Entity Information | Dec. 31, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | This Current Report on Form 8-K/A amends the Current Report on Form 8-K filed by the Company on January 5, 2022 in order to include the financial statements of WestEnd and the pro forma financial information required by Item 9.01 of Form 8-K. The pro forma financial information included in this Form 8-K/A has been presented for informational purposes only, as required by Form 8-K. It does not purport to represent the actual results of operations that Victory and WestEnd would have achieved had the companies been combined during the periods presented in the pro forma financial information and is not intended to project the future results of operations that the combined company may achieve after Victory’s acquisition of WestEnd. Except as described above, all other information in Victory’s Current Report on Form 8-K filed on January 5, 2022 remains unchanged. |
| Document Period End Date | Dec. 31, 2021 |
| Entity Registrant Name | Victory Capital Holdings, Inc. |
| Entity Central Index Key | 0001570827 |
| Entity File Number | 001-38388 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 32-0402956 |
| Entity Address, Address Line One | 15935 La Cantera Parkway |
| Entity Address, City or Town | San Antonio |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 78256 |
| City Area Code | 216 |
| Local Phone Number | 898-2400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, Par Value $0.01 |
| Trading Symbol | VCTR |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
