| Cover Page | Feb. 22, 2022 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 22, 2022 |
| Entity Registrant Name | Talkspace, Inc. |
| Entity Central Index Key | 0001803901 |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-39314 |
| Entity Tax Identification Number | 84-4636604 |
| Entity Address, Postal Zip Code | 00000 |
| City Area Code | 212 |
| Local Phone Number | 284-7206 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common stock, $0.0001 par value per share |
| Trading Symbol | TALK |
| Security Exchange Name | NASDAQ |
| Warrants | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase common stock |
| Trading Symbol | TALKW |
| Security Exchange Name | NASDAQ |
