NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Share Repurchase Program (Details) shares in Millions, $ in Millions	6 Months Ended
Jun. 30, 2023 USD ($) shares
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares acquired (in shares) \| shares	8.8
Treasury stock, value acquired \| $	$ 151
Sinclair Broadcast Group, LLC
Equity, Class of Treasury Stock [Line Items]
Treasury stock, shares acquired (in shares) \| shares	8.8
Treasury stock, value acquired \| $	$ 151

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-2

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481549/505-30-45-1

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration