CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (279)	$ 2,701	$ (326)
Adjustments to post-retirement obligations, net of taxes	0	3	1
Share of other comprehensive gain of equity method investments	0	3	7
Comprehensive (loss) income	(279)	2,707	(318)
Comprehensive loss (income) attributable to redeemable noncontrolling interests	4	(20)	(18)
Comprehensive income attributable to noncontrolling interests	(16)	(29)	(70)
Comprehensive (loss) income attributable to Sinclair	$ (291)	$ 2,658	$ (406)