Document and Entity Information
| Document and Entity Information | Dec. 08, 2023 |
| Document And Entity Information [Line Items] | |
| Entity Address, State or Province | DC |
| Amendment Flag | false |
| Entity Central Index Key | 0001823466 |
| Document Type | 8-K |
| Document Period End Date | Dec. 08, 2023 |
| Entity Registrant Name | FISCALNOTE HOLDINGS, INC. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39672 |
| Entity Tax Identification Number | 88-3772307 |
| Entity Address, Address Line One | 1201 Pennsylvania Avenue NW |
| Entity Address, Address Line Two | 6th Floor |
| Entity Address, City or Town | Washington |
| Entity Address, Postal Zip Code | 20004 |
| City Area Code | (202) |
| Local Phone Number | 793-5300 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Class A common stock, par value $0.0001 per share |
| Trading Symbol | NOTE |
| Security Exchange Name | NYSE |
| Warrant [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Warrants to purchase one share of Class A common stock |
| Trading Symbol | NOTE.WS |
| Security Exchange Name | NYSE |