| Cover | Feb. 21, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 21, 2020 |
| Entity File Number | 001-37477 |
| Entity Registrant Name | Teladoc Health, Inc. |
| Entity Central Index Key | 0001477449 |
| Entity Tax Identification Number | 04-3705970 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 2 Manhattanville Road |
| Entity Address, Address Line Two | Suite 203 |
| Entity Address, City or Town | Purchase |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10577 |
| City Area Code | 203 |
| Local Phone Number | 635-2002 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | TDOC |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
