| Document and Entity Information | Apr. 24, 2024 |
| Cover [Abstract] | |
| Entity Registrant Name | TEGNA INC |
| Amendment Flag | true |
| Entity Central Index Key | 0000039899 |
| Current Fiscal Year End Date | --12-31 |
| Document Type | 8-K/A |
| Document Period End Date | Apr. 24, 2024 |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 1-6961 |
| Entity Tax Identification Number | 16-0442930 |
| Entity Address, Address Line One | 8350 Broad Street |
| Entity Address, Address Line Two | Suite 2000 |
| Entity Address, City or Town | Tysons |
| Entity Address, State or Province | VA |
| Entity Address, Postal Zip Code | 22102-5151 |
| City Area Code | (703) |
| Local Phone Number | 873-6600 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, Par Value |
| Trading Symbol | TGNA |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
| Amendment Description | This Current Report on Form 8-K/A (this “Amendment”) is being filed as an amendment to the Current Report on Form 8-K filed by TEGNA Inc. (the “Company”) on April 24, 2024 (the “Original Report”). The Original Report was filed, among other things, to report the approval of amendments to the By-laws of the Company (the “By-law Amendments”). As previously filed, Exhibit 3.2 of the Original Report reflected the incorrect version of the amended By-laws of the Company. This Amendment amends the Original Report solely to replace Exhibit 3.2. Except as specifically provided herein, the information in the Original Report remains unchanged. |
