NOTES PAYABLE, FINANCE LEASES, AND COMMERCIAL BANK FINANCING (Details)	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Feb. 07, 2023 USD ($)
Debt Instrument [Line Items]
Borrowings under revolving credit facility exceed total commitments (as a percent)	35.00%
Gain on extinguishment of debt	$ 1,000,000	$ 0
Consolidated VIEs
Debt Instrument [Line Items]
Consolidated total debt	2,000,000		$ 2,000,000
Interest Rate Swap
Debt Instrument [Line Items]
Notional amount				$ 600,000,000
Fixed interest rate				3.90%
Fair value of interest rate swap	7,000,000		1,000,000
Guarantee Obligations
Debt Instrument [Line Items]
Unconditional and irrevocably guaranteed debt	2,000,000		2,000,000
Provide guarantee of certain obligations	$ 117,000,000
Annual escalations (as a percent)	4.00%
Debt term (year)	5 years
Affiliated Entity
Debt Instrument [Line Items]
Finance lease liabilities, current	$ 2,000,000		2,000,000
Finance lease liabilities, non-current	11,000,000		5,000,000
Term Loan B-2, due September 30, 2026 | Term Loan
Debt Instrument [Line Items]
Debt instrument, repurchased face amount	27,000,000
Repayment of term loan	25,000,000
Gain on extinguishment of debt	$ 1,000,000
STG Revolving Credit Facility
Debt Instrument [Line Items]
First lien leverage ratio	4.5
Borrowings outstanding	$ 0
Sinclair Broadcast Group, LLC
Debt Instrument [Line Items]
Borrowings under revolving credit facility exceed total commitments (as a percent)	35.00%
Gain on extinguishment of debt	$ 1,000,000	$ 0
Sinclair Broadcast Group, LLC | Consolidated VIEs
Debt Instrument [Line Items]
Consolidated total debt	2,000,000		2,000,000
Sinclair Broadcast Group, LLC | Interest Rate Swap
Debt Instrument [Line Items]
Notional amount				$ 600,000,000
Fixed interest rate				3.90%
Fair value of interest rate swap	7,000,000		1,000,000
Sinclair Broadcast Group, LLC | Guarantee Obligations
Debt Instrument [Line Items]
Unconditional and irrevocably guaranteed debt	2,000,000		2,000,000
Provide guarantee of certain obligations	$ 117,000,000
Annual escalations (as a percent)	4.00%
Debt term (year)	5 years
Sinclair Broadcast Group, LLC | Affiliated Entity
Debt Instrument [Line Items]
Finance lease liabilities, current	$ 2,000,000		2,000,000
Finance lease liabilities, non-current	11,000,000		$ 5,000,000
Sinclair Broadcast Group, LLC | Term Loan B-2, due September 30, 2026 | Term Loan
Debt Instrument [Line Items]
Debt instrument, repurchased face amount	27,000,000
Repayment of term loan	25,000,000
Gain on extinguishment of debt	$ 1,000,000
Sinclair Broadcast Group, LLC | STG Revolving Credit Facility
Debt Instrument [Line Items]
First lien leverage ratio	4.5
Borrowings outstanding	$ 0