Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2022	Feb. 17, 2023	Jun. 30, 2022
Cover [Abstract]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	1-6961
Entity Registrant Name	TEGNA INC.
Entity Incorporation, State or Country Code	DE
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
Title of 12(b) Security	Common Stock, par value $1.00 per share
Trading Symbol	TGNA
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 4,639,159,645
Entity Common Stock, Shares Outstanding		223,552,503
Amendment Flag	true
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Central Index Key	0000039899
Amendment Description	On February 27, 2023, TEGNA Inc. (“TEGNA,” the “Company,” “we,” “us,” or “our”) filed our Annual Report on Form 10-K for the fiscal year ended December 31, 2022 (the “Original Form 10-K”). The Original Form 10-K omitted Part III, Items 10 (Directors, Executive Officers and Corporate Governance), 11 (Executive Compensation), 12 (Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters), 13 (Certain Relationships and Related Transactions, and Director Independence) and 14 (Principal Accountant Fees and Services) in reliance on General Instruction G(3) to Form 10-K, which provides that such information may be either incorporated by reference from the registrant’s definitive proxy statement or included in an amendment to Form 10-K, in either case filed with the Securities and Exchange Commission (the “SEC”) not later than 120 days after the end of the fiscal year.This Amendment No. 1 to Form 10-K (this “Amendment”) is being filed solely to: •amend Part III, Items 10, 11, 12, 13 and 14 of the Original Form 10-K to include the information required by such Items; and •file new certifications of our principal executive officer and principal financial officer as exhibits to this Amendment under Item 15 of Part IV hereof, pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). This Amendment does not otherwise change or update any of the disclosures set forth in the Original Form 10-K and does not otherwise reflect any events occurring after the filing of the Original Form 10-K.
Auditor Name	Auditor Name: PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Auditor Location: Washington, District of Columbia