Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net earnings (ViacomCBS and noncontrolling interests)	$ 4,631	$ 2,701	$ 3,339
Other comprehensive income (loss), net of tax:
Cumulative translation adjustments	(143)	134	9
Net actuarial gain (loss) and prior service costs	75	(2)	(145)
Other comprehensive income (loss) from continuing operations, net of tax (ViacomCBS and noncontrolling interests)	(68)	132	(136)
Other comprehensive income (loss) from discontinued operations	(3)	5	6
Comprehensive income	4,560	2,838	3,209
Less: Comprehensive income attributable to noncontrolling interests	87	278	33
Comprehensive income attributable to ViacomCBS	$ 4,473	$ 2,560	$ 3,176