Debt - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Dec. 31, 2024
Secured Debt [Member]
Debt Instrument [Line Items]
Maximum consolidated first lien net leverage ratio	425.00%
Nexstar [Member] \| Secured Debt [Member] \| Term Loans [Member]
Debt Instrument [Line Items]
Repayment of scheduled maturity of debt	$ 31
Nexstar [Member] \| Secured Debt [Member] \| Revolving loans, due June 2027 [Member]
Debt Instrument [Line Items]
Available borrowing capacity	530
Credit facility outstanding amount	$ 20
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 4.75% Notes, due November 2028 [Member]
Debt Instrument [Line Items]
Interest rate	4.75%	4.75%
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 5.625% Notes, due July 2027 [Member]
Debt Instrument [Line Items]
Interest rate	5.625%	5.625%
Mission [Member] \| Secured Debt [Member] \| Revolving loans, due June 2027 [Member]
Debt Instrument [Line Items]
Available borrowing capacity	$ 14

Maximum consolidated first lien net leverage ratio.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of the required periodic payments applied to principal.

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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