CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 319	$ (279)	$ 2,701
Unrealized gain on interest rate swap, net of taxes	1	0	0
Adjustments to post-retirement obligations, net of taxes	0	0	3
Share of other comprehensive gain of equity method investments	0	0	3
Comprehensive income (loss)	320	(279)	2,707
Comprehensive loss (income) attributable to redeemable noncontrolling interests	0	4	(20)
Comprehensive income attributable to noncontrolling interests	(9)	(16)	(29)
Comprehensive income (loss) attributable to Sinclair	$ 311	$ (291)	$ 2,658