Basis of Presentation and Summary of Significant Accounting Policies - Reconciliation of Net Earnings (Loss) Used in Calculation of EPS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Amounts attributable to Paramount:
Net earnings (loss) from continuing operations	$ (1,284)	$ 725	$ 4,381
Preferred stock dividends	(58)	(58)	(44)
Net earnings (loss) from continuing operations for basic EPS calculation	(1,342)	667	4,337
Preferred stock dividend adjustment	0	0	44
Net earnings (loss) from continuing operations for diluted EPS calculation	(1,342)	667	4,381
Amounts attributable to Paramount:
Net earnings (loss)	(608)	1,104	4,543
Preferred stock dividends	(58)	(58)	(44)
Net earnings (loss) for basic EPS calculation	(666)	1,046	4,499
Preferred stock dividend adjustment	0	0	44
Net earnings (loss) for diluted EPS calculation	$ (666)	$ 1,046	$ 4,543