| Cover | Mar. 03, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Mar. 3, 2021 |
| Entity Registrant Name | TYLER TECHNOLOGIES, INC |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 1-10485 |
| Entity Tax Identification Number | 75-2303920 |
| Entity Address, Address Line One | 5101 TENNYSON PARKWAY |
| Entity Address, City or Town | PLANO |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75024 |
| City Area Code | 972 |
| Local Phone Number | 713-3700 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | COMMON STOCK, $0.01 PAR VALUE |
| Trading Symbol | TYL |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0000860731 |
| Amendment Flag | false |
