| Document and Entity Information | Nov. 07, 2019 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Amendment Flag | true |
| Amendment Description | Nexstar Media Group, Inc. (the “Company”) is filing this amendment to the Form 8-K (this “Amendment”) filed with the Securities and Exchange Commission on November 6, 2019 (the “Original Form 8-K”) for the purpose of correcting the previously reported total net leverage ratio and first lien net leverage ratio as of September 30, 2019 on page 4 of Exhibit 99.1 to the Original Form 8-K. This amendment does not change the Company’s GAAP and non-GAAP results and guidance provided on Exhibit 99.1. Except for the changes to Exhibit 99.1, this Amendment does not otherwise amend or update any information originally set forth in or filed with the Original Form 8-K. |
| Document Period End Date | Nov. 7, 2019 |
| Entity Registrant Name | Nexstar Media Group, Inc. |
| Entity Central Index Key | 0001142417 |
| Entity Emerging Growth Company | false |
| Entity File Number | 000-50478 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 23-3083125 |
| Entity Address, Address Line One | 545 E. John Carpenter |
| Entity Address, Address Line Two | Freeway |
| Entity Address, Address Line Three | Suite 700 |
| Entity Address, City or Town | Irving |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 75062 |
| City Area Code | (972) |
| Local Phone Number | 373-8800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock |
| Trading Symbol | NXST |
| Security Exchange Name | NASDAQ |
