GOODWILL, INDEFINITE-LIVED INTANGIBLE ASSETS, AND OTHER INTANGIBLE ASSETS - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amortized intangible assets:
Accumulated goodwill impairment	$ 3,029,000,000	$ 3,029,000,000
Impairment	0	0
Impairment of indefinite-lived intangible assets (excluding goodwill)	0	0
Amortization of definite-lived intangible and other assets	166,000,000	225,000,000	$ 554,000,000
Impairment charge	$ 0	0	0
Customer relationships
Amortized intangible assets:
Amortization period, weighted average useful life	14 years
Network affiliation
Amortized intangible assets:
Amortization period, weighted average useful life	15 years
Sports contracts
Amortized intangible assets:
Amortization of definite-lived intangible and other assets		4,000,000	77,000,000
Sinclair Broadcast Group, LLC
Amortized intangible assets:
Accumulated goodwill impairment	$ 3,029,000,000	3,029,000,000
Impairment	0	0
Impairment of indefinite-lived intangible assets (excluding goodwill)	0	0
Amortization of definite-lived intangible and other assets	148,000,000	225,000,000	554,000,000
Impairment charge	$ 0	0	0
Sinclair Broadcast Group, LLC | Customer relationships
Amortized intangible assets:
Amortization period, weighted average useful life	14 years
Sinclair Broadcast Group, LLC | Network affiliation
Amortized intangible assets:
Amortization period, weighted average useful life	15 years
Sinclair Broadcast Group, LLC | Sports contracts
Amortized intangible assets:
Amortization of definite-lived intangible and other assets		$ 4,000,000	$ 77,000,000