Debt - Long Term Debt (Parenthetical) (Details)	6 Months Ended	12 Months Ended
Debt - Long Term Debt (Parenthetical) (Details)	Jun. 30, 2026	Dec. 31, 2025	Apr. 30, 2026	Apr. 02, 2026	Mar. 31, 2026
Nexstar [Member] \| Secured Debt [Member] \| Revolving loans, due 2030 [Member]
Long term Debt [Abstract]
Due year	2030	2030
Nexstar [Member] \| Secured Debt [Member] \| Term Loan A, due 2030 [Member]
Long term Debt [Abstract]
Due year	2030	2030
Nexstar [Member] \| Secured Debt [Member] \| Term Loan B, due 2032 [Member]
Long term Debt [Abstract]
Due year	2032	2032
Nexstar [Member] \| Secured Debt [Member] \| Term Loan B, due 2033 [Member]
Long term Debt [Abstract]
Due year	2033	2033
Nexstar [Member] \| Secured Debt [Member] \| 7.75% Notes due 2027 [Member]
Long term Debt [Abstract]
Interest rate	7.75%	7.75%
Due year	2027	2027
Nexstar [Member] \| Secured Debt [Member] \| 7.25% Notes due 2027 [Member]
Long term Debt [Abstract]
Interest rate	7.25%	7.25%
Due year	2027	2027
Nexstar [Member] \| Secured Debt [Member] \| 6.50% Secured Notes due 2033 [Member]
Long term Debt [Abstract]
Interest rate	6.50%	6.50%
Due year	2033	2033
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 7.75% Notes due 2027 [Member]
Long term Debt [Abstract]
Interest rate					7.75%
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 7.25% Notes due 2027 [Member]
Long term Debt [Abstract]
Interest rate					7.25%
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 6.50% Secured Notes due 2033 [Member]
Long term Debt [Abstract]
Interest rate					6.50%
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 5.625% Notes due 2027 [Member]
Long term Debt [Abstract]
Interest rate	5.625%	5.625%	5.625%	5.625%
Due year	2027	2027
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 4.75% Notes due 2028 [Member]
Long term Debt [Abstract]
Interest rate	4.75%	4.75%
Due year	2028	2028
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 5.00% Notes due 2029 [Member]
Long term Debt [Abstract]
Interest rate	5.00%	5.00%			5.00%
Due year	2029	2029
Nexstar [Member] \| Senior Subordinated Notes [Member] \| 7.25% Notes due 2034 [Member]
Long term Debt [Abstract]
Interest rate	7.25%	7.25%	7.25%
Due year	2034	2034
Mission [Member] \| Secured Debt [Member] \| Revolving loans, due 2030 [Member]
Long term Debt [Abstract]
Due year	2030	2030
Mission [Member] \| Secured Debt [Member] \| Term Loan B due 2028 [Member]
Long term Debt [Abstract]
Due year	2028	2028