NOTES PAYABLE, FINANCE LEASES, AND COMMERCIAL BANK FINANCING (Details)	1 Months Ended		3 Months Ended		6 Months Ended
	Jul. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Feb. 07, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Borrowings under revolving credit facility exceed total commitments (as a percent)					35.00%
Gain on extinguishment of debt			$ 11,000,000	$ 3,000,000	$ 11,000,000	$ 3,000,000
Consolidated VIEs
Debt Instrument [Line Items]
Consolidated total debt		$ 2,000,000	2,000,000		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		8,000,000	8,000,000		8,000,000
Guarantee Obligations
Debt Instrument [Line Items]
Unconditional and irrevocably guaranteed debt		2,000,000	2,000,000		2,000,000			2,000,000
Provide guarantee of certain obligations		112,000,000	112,000,000		$ 112,000,000
Annual escalations (as a percent)					4.00%
Debt term ( year)					6 years
5.125% Senior Notes due 2027 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount		$ 3,000,000	$ 3,000,000		$ 3,000,000
Interest rate (as a percent)		5.125%	5.125%		5.125%
Repayments of senior debt		$ 3,000,000
5.125% Senior Notes due 2027 | Senior Notes | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, repurchased face amount	$ 500,000
Interest rate (as a percent)	5.125%
Repayments of senior debt	$ 400,000
5.500% Senior Notes due 2030 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount		$ 15,000,000	$ 15,000,000		$ 15,000,000
Interest rate (as a percent)		5.50%	5.50%		5.50%
Repayments of senior debt		$ 8,000,000
4.125% Senior Secured Notes due 2030 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount		$ 13,000,000	$ 13,000,000		$ 13,000,000
Interest rate (as a percent)		4.125%	4.125%		4.125%
Repayments of senior debt		$ 8,000,000
STG Senior Unsecured Notes | Senior Notes
Debt Instrument [Line Items]
Gain on extinguishment of debt			$ 11,000,000		$ 11,000,000
Term Loan B-2, due September 30, 2026 | Term Loan | Subsequent Event
Debt Instrument [Line Items]
Repayments of senior debt	800,000
Repaid aggregate principal amount	1,000,000
STG Revolving Credit Facility
Debt Instrument [Line Items]
First lien leverage ratio		4.5	4.5		4.5
Borrowings outstanding		$ 0	$ 0		$ 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			11,000,000	$ 3,000,000	$ 11,000,000	$ 3,000,000
Consolidated total debt		4,206,000,000	4,206,000,000		4,206,000,000
Sinclair Broadcast Group, LLC | Consolidated VIEs
Debt Instrument [Line Items]
Consolidated total debt		2,000,000	2,000,000		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		8,000,000	8,000,000		8,000,000
Sinclair Broadcast Group, LLC | Guarantee Obligations
Debt Instrument [Line Items]
Unconditional and irrevocably guaranteed debt		2,000,000	2,000,000		2,000,000			2,000,000
Provide guarantee of certain obligations		112,000,000	112,000,000		$ 112,000,000
Annual escalations (as a percent)					4.00%
Debt term ( year)					7 years
Sinclair Broadcast Group, LLC | Related Party
Debt Instrument [Line Items]
Finance lease liabilities, current		2,000,000	2,000,000		$ 2,000,000			3,000,000
Finance lease liabilities, non-current		6,000,000	6,000,000		6,000,000			$ 6,000,000
Sinclair Broadcast Group, LLC | 5.125% Senior Notes due 2027 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount		$ 3,000,000	$ 3,000,000		$ 3,000,000
Interest rate (as a percent)		5.125%	5.125%		5.125%
Repayments of senior debt		$ 3,000,000
Sinclair Broadcast Group, LLC | 5.125% Senior Notes due 2027 | Senior Notes | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, repurchased face amount	$ 500,000
Interest rate (as a percent)	5.125%
Repayments of senior debt	$ 400,000
Sinclair Broadcast Group, LLC | 5.500% Senior Notes due 2030 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount		$ 15,000,000	$ 15,000,000		$ 15,000,000
Interest rate (as a percent)		5.50%	5.50%		5.50%
Repayments of senior debt		$ 8,000,000
Sinclair Broadcast Group, LLC | 4.125% Senior Secured Notes due 2030 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, repurchased face amount		$ 13,000,000	$ 13,000,000		$ 13,000,000
Interest rate (as a percent)		4.125%	4.125%		4.125%
Repayments of senior debt		$ 8,000,000
Sinclair Broadcast Group, LLC | STG Senior Unsecured Notes | Senior Notes
Debt Instrument [Line Items]
Gain on extinguishment of debt			$ 11,000,000		$ 11,000,000
Sinclair Broadcast Group, LLC | Term Loan B-2, due September 30, 2026 | Term Loan | Subsequent Event
Debt Instrument [Line Items]
Repayments of senior debt	800,000
Repaid aggregate principal amount	$ 1,000,000
Sinclair Broadcast Group, LLC | STG Revolving Credit Facility
Debt Instrument [Line Items]
First lien leverage ratio		4.5	4.5		4.5
Borrowings outstanding		$ 0	$ 0		$ 0