| Cover | Oct. 28, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 28, 2020 |
| Entity File Number | 000-50972 |
| Entity Registrant Name | TEXAS ROADHOUSE, INC. |
| Entity Central Index Key | 0001289460 |
| Entity Tax Identification Number | 20-1083890 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 6040 Dutchmans Lane |
| Entity Address, City or Town | Louisville |
| Entity Address, State or Province | KY |
| Entity Address, Postal Zip Code | 40205 |
| City Area Code | 502 |
| Local Phone Number | 426-9984 |
| 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 | TXRH |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
