v3.26.1
Fair Value Measurements - Schedule of Estimated Fair Values and Carrying Amounts of Long-term Debt Not Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Nexstar [Member] | Secured Debt [Member] | Revolving loans due 2030 [Member] | Level 3 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt $ 291 $ 144
Nexstar [Member] | Secured Debt [Member] | Revolving loans due 2030 [Member] | Level 3 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [1] 288 139
Nexstar [Member] | Secured Debt [Member] | Term Loan A, due 2030 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 1,805 1,852
Nexstar [Member] | Secured Debt [Member] | Term Loan A, due 2030 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 1,794 1,820
Nexstar [Member] | Secured Debt [Member] | Term Loan B, due 2032 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 1,269 1,278
Nexstar [Member] | Secured Debt [Member] | Term Loan B, due 2032 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 1,273 1,302
Nexstar [Member] | Secured Debt [Member] | Term Loan B, due 2033 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 1,473  
Nexstar [Member] | Secured Debt [Member] | Term Loan B, due 2033 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 1,510  
Nexstar [Member] | Secured Debt [Member] | 7.75% Notes due 2027 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 203  
Nexstar [Member] | Secured Debt [Member] | 7.75% Notes due 2027 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 204  
Nexstar [Member] | Secured Debt [Member] | 7.25% Notes due 2027 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 243  
Nexstar [Member] | Secured Debt [Member] | 7.25% Notes due 2027 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 246  
Nexstar [Member] | Secured Debt [Member] | 6.50% Secured Notes due 2033 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 3,352  
Nexstar [Member] | Secured Debt [Member] | 6.50% Secured Notes due 2033 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 3,377  
Nexstar [Member] | Senior Subordinated Notes [Member] | 5.625% Notes due 2027 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt   1,715
Nexstar [Member] | Senior Subordinated Notes [Member] | 5.625% Notes due 2027 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2]   1,712
Nexstar [Member] | Senior Subordinated Notes [Member] | 4.75% Notes due 2028 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 997 996
Nexstar [Member] | Senior Subordinated Notes [Member] | 4.75% Notes due 2028 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 978 990
Nexstar [Member] | Senior Subordinated Notes [Member] | 5.00% Notes due 2029 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 61  
Nexstar [Member] | Senior Subordinated Notes [Member] | 5.00% Notes due 2029 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 60  
Nexstar [Member] | Senior Subordinated Notes [Member] | 7.25% Notes due 2034 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 1,703  
Nexstar [Member] | Senior Subordinated Notes [Member] | 7.25% Notes due 2034 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] 1,716  
Mission [Member] | Secured Debt [Member] | Revolving loans due 2030 [Member] | Level 3 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 62 62
Mission [Member] | Secured Debt [Member] | Revolving loans due 2030 [Member] | Level 3 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [1] 61 61
Mission [Member] | Secured Debt [Member] | Term Loan B due 2028 [Member] | Level 2 [Member] | Carrying Amount [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt 285 286
Mission [Member] | Secured Debt [Member] | Term Loan B due 2028 [Member] | Level 2 [Member] | Fair Value [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Carrying Amount and Fair Value of Long-term Debt [2] $ 285 $ 288
[1] The fair value is based on the bid price provided by a third-party investment banking firm and is classified as Level 3 in the fair value hierarchy as the debt is not traded (unobservable in the market).
[2] The fair value is based on the bid price provided by a third-party investment banking firm and is classified as Level 2 in the fair value hierarchy as the bid price is quoted in a major market news service and the investment banking firm stands ready to trade (observable in the market).