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Net earnings from discontinued operations, net of tax Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax Revenues Disposal Group, Including Discontinued Operation, Revenue Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Depreciation expense, including amortization of finance leases Depreciation Schedule of Assets and Liabilities, Lessee Schedule Of Assets And Liabilities, Lessee [Table Text Block] Schedule Of Assets And Liabilities, Lessee [Table Text Block] Deferred income tax assets, net Deferred Tax Assets, Net 5.90% Senior Notes due 2040 5.90% Senior Notes due 2040 [Member] 5.90% Senior Notes due 2040 The CW The CW [Member] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Financial Instruments Derivative Instruments, Gain (Loss) [Table Text Block] Common collective funds Defined Benefit Plan, Common Collective Trust [Member] Film Inventory Film Inventory [Member] Film Inventory [Member] The Company The Company [Member] The Company Additional paid-in capital Additional Paid in Capital, Common Stock Accrued programming and production costs Program Rights Obligations, Current Preferred stock dividends Preferred stock dividends Preferred stock dividends Preferred stock dividends Dividends, Preferred Stock 2027 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Five State and local Current State and Local Tax Expense (Benefit) Other Dispositions Other Dispositions [Member] Other Dispositions Measurement Input Type [Domain] Measurement Input Type [Domain] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Settlements paid Defined Benefit Plan, Plan Assets, Payment for Settlement Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Document Information [Line Items] Document Information [Line Items] Equity securities Defined Benefit Plan, Equity Securities [Member] 2028 Lessee, Operating Lease, Liability, to be Paid, after Year Five Variable Interest Entity Disclosure [Abstract] Variable Interest Entity Disclosure Equity Component [Domain] Equity Component [Domain] Net cash flow provided by operating activities from discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Discount Rate Measurement Input, Discount Rate [Member] Ownership [Axis] Ownership [Axis] Additions for current year tax positions Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Investment, Name [Domain] Investment, Name [Domain] Maximum consolidated leverage ratio, potential increase Line of Credit Facility, Covenant, Maximum Consolidated Leverage Ratio, Accordion Feature, Increase Line of Credit Facility, Covenant, Maximum Consolidated Leverage Ratio, Accordion Feature, Increase Termination fee, net of advisory fees Disposal Group, Including Discontinued Operation, Termination Fee Disposal Group, Including Discontinued Operation, Termination Fee 4.85% Senior Notes due 2042 4.85% Senior Notes due 2042 [Member] 4.85% Senior Notes due 2042 Related Party [Domain] Related Party [Domain] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Write-down of investments Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount 4.75% Senior Notes due 2025 4.75% Senior Notes due 2025 [Member] 4.75% Senior Notes due 2025 Number of quantitative assessments performed Impairment Test, Number Of Quantitative Assessments Performed Impairment Test, Number Of Quantitative Assessments Performed Net amount recognized in accumulated other comprehensive income (loss) Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax Fair value of plan assets, beginning of year Fair value of plan assets, end of year Investments, at fair value Defined Benefit Plan, Plan Assets, Amount Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] AFTRA Retirement Plan AFTRA Retirement Plan [Member] Multiemployer defined benefit plan to which the Company contributes. Unrecognized future expense of unvested RSUs Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount Borrowings outstanding Long-Term Line of Credit Entity Address, State or Province Entity Address, State or Province CBS Television City CBS Television City [Member] CBS Television City [Member] Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Shares issued, price per share (in shares) Shares Issued, Price Per Share Operating Activities [Domain] Operating Activities [Domain] Long Lived Assets Held-for-sale by Asset Type [Axis] Long-Lived Assets Held-for-sale by Asset Type [Axis] Award Type [Axis] Award Type [Axis] Actuarial gain (loss) Actuarial gain Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss) 2027 Defined Benefit Plan, Expected Future Benefit Payment, Year Five Cash settlements Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Recognized in other comprehensive income, before tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax 7.125% Senior Notes due 2023 7.125% Senior Notes due 2023 [Member] 7.125% Senior Notes due 2023 Other current liabilities Operating Lease, Liability, Current Collaborative Arrangements Collaborative Arrangement, Accounting Policy [Policy Text Block] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Costs and expenses: Costs and Expenses [Abstract] 3.70% Senior Notes due 2028 3.70% Senior Notes due 2028 [Member] 3.70% Senior Notes due 2028 Other Commitments [Domain] Other Commitments [Domain] Released, film group monetization Film, Monetized in Film Group, Capitalized Cost, Released Total liabilities Liabilities Decrease in pension and postretirement benefit obligations Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Estimated Future Benefit Payments Schedule of Expected Benefit Payments [Table Text Block] Change in Benefit Obligations Schedule of Changes in Projected Benefit Obligations [Table Text Block] Shares of common stock outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Additional Financial Information Disclosure [Abstract] Additional Financial Information Disclosure [Abstract] Additional Financial Information Disclosure [Abstract] Revolving Credit Facility Revolving Credit Facility [Member] Revenues Revenue from Contract with Customer [Policy Text Block] Current: Current Income Tax Expense (Benefit), Continuing Operations [Abstract] Document Type Document Type Expiration Date of Collective Bargaining Agreement Multiemployer Plan, Pension, Significant, Collective-Bargaining Arrangement, Expiration Date Other comprehensive income (loss) from continuing operations, net of tax (Paramount and noncontrolling interests) Other Comprehensive Income (Loss), Continuing Operations, Net of Tax Other Comprehensive Income (Loss), Continuing Operations, Net of Tax Impairment Testing Assumptions [Line Items] Impairment Testing Assumptions [Line Items] Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Property and equipment estimated useful life Property, Plant and Equipment, Useful Life Components of net periodic cost: Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Forfeited or expired (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Assets: Assets, Fair Value Disclosure [Abstract] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Severance Severance Costs Non-vested, beginning balance (USD per share) Non-vested, ending balance (USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value 4.875% Senior Debentures due 2043 4.875% Senior Debentures due 2043 [Member] Senior debentures due June 2043 with a discount rate of 4.875%. Tax credit and loss carryforwards Deferred Tax Assets, Tax Credit Carryforwards, General Business Deferred tax provision (benefit) Total deferred Deferred Income Tax Expense (Benefit) Other assets Assets for Plan Benefits, Defined Benefit Plan Deferred income taxes Defined Benefit Plan Accumulated Other Comprehensive Income Deferred Tax Deferred income taxes relating to amounts recorded in accumulated other comprehensive income associated with pension and postretirement benefit plans. Goodwill Disposal Group, Including Discontinued Operation, Goodwill Directors Guild of America - Producer Directors Guild Of America Producer [Member] Multiemployer defined benefit plan to which the Company contributes. Period for consolidated EBITDA Debt Instrument, Period for Consolidated EBITDA Debt Instrument, Period for Consolidated EBITDA Retirement Plan Name [Domain] Retirement Plan Name [Domain] Other Other Investments [Member] Junior subordinated notes Junior Subordinated Notes Stock Options and RSUs Stock Options And Restricted Stock Units [Member] Stock Options and Restricted Stock Units [Member] Maximum percent difference between carrying value and fair value Indefinite Lived Intangible Assets, Difference Between Carrying Value and Fair Value, Maximum, Percent Indefinite Lived Intangible Assets, Difference Between Carrying Value and Fair Value, Maximum, Percent Multiemployer Plans [Line Items] Multiemployer Plan [Line Items] Interest income Interest Income, Other Financing obligations Deferred Tax Liabilities, Financing Arrangements 5.75% Series A Mandatory Convertible Preferred Stock, $0.001 par value Convertible Preferred Stock Convertible Preferred Stock [Member] Debt Disclosure 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[Domain] Asset Class [Domain] Minimum Minimum [Member] Nordics Nordics [Member] Denmark, Finland, Norway, and Sweden Entity Emerging Growth Company Entity Emerging Growth Company 4.20% Senior Notes due 2029 4.20% Senior Notes due 2029 [Member] 4.20% Senior Notes due 2029 Three Markets Three Markets [Member] Three Markets Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Other comprehensive income (loss): Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax [Abstract] Supplemental Cash Flow Information Related to Leases Supplemental Cash Flow Information Leases [Table Text Block] Supplemental Cash Flow Information Leases [Table Text Block] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Retiree Medicare drug subsidy Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt 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percent of plan assets invested in Company common stock. Deferred revenues Contract with Customer, Liability, Current Total Paramount Stockholders’ Equity Parent [Member] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Income Statement Location [Domain] Income Statement Location [Domain] Amendment Flag Amendment Flag Ownership interest after divestiture Ownership Interest After Divestiture Ownership Interest After Divestiture Finite-lived intangible asset useful life Finite-Lived Intangible Asset, Useful Life Operating lease cost Operating Lease, Cost International broadcast licenses Operating and Broadcast Rights International [Member] Operating and Broadcast Rights International [Member] Earnings from discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Share of equity investee Defined Benefit Plan Accumulated Other Comprehensive Income Share Of Equity Investee Before Tax Share of equity method investee's other comprehensive income included in the Company's other comprehensive income. Production and licensing of television and film programming Production Licensing Of Programming [Member] Production and licensing of television and film programming [Member] Net cash flow (used for) provided by operating activities from continuing operations Net Cash Provided by (Used in) Operating Activities, Continuing Operations 2028 and thereafter Other Commitment, to be Paid, after Year Five Acquisitions and Dispositions Mergers, Acquisitions and Dispositions Disclosures [Text Block] 6.375% Junior Subordinated Debentures due 2062 6.375% Junior Subordinated Debentures due 2062 [Member] 6.375% Junior Subordinated Debentures due 2062 Schedule of Amounts Recognized in Other Comprehensive Income (Loss) Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Goodwill and Intangible Assets Disclosure [Abstract] Goodwill and Intangible Assets Disclosure [Abstract] Other assets Other Assets, Noncurrent Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] Exercisable (shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number 2026 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Four Programming and Other Inventory Entertainment [Text Block] 4.375% Senior Debentures due 2043 4.375% Senior Debentures due 2043 [Member] Senior debentures due in 2043 with a discount rate of 4.375%. Screen Actors Guild - Producers Screen Actors Guild Producers [Member] Multiemployer defined benefit plan to which the Company contributes. 3.50% Senior Notes due 2025 3.50% Senior Notes due 2025 [Member] 3.50% Senior Notes due 2025 Television Licensing Television Licensing [Member] Television Licensing [Member] Remaining term Lessee, Operating Lease, Term of Contract Counterparty Name [Axis] Counterparty Name [Axis] Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accumulated impairment losses, Foreign Currency Goodwill, Accumulated Impairment, Foreign Currency Translation Gain (Loss) Goodwill, Accumulated Impairment, Foreign Currency Translation Gain (Loss) Total costs and expenses Disposal Group, Including Discontinued Operation, Costs and Expense Disposal Group, Including Discontinued Operation, Costs and Expense Payments for amounts included in operating lease liabilities (operating cash flows) Operating Lease, Payments Stock options Share-Based Payment Arrangement, Option [Member] Weighted average assumptions used to determine benefit obligations at December 31: Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] Domestic Plan Domestic Plan [Member] Decrease (increase) to net actuarial loss and prior service costs Recognized in other comprehensive income (loss), net of tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Operating Disposal Group, Including Discontinued Operation, Operating Expense Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Interest limitation carryforward Deferred Tax Asset, Interest Carryforward Common stock, shares authorized (in shares) Common Stock, Shares Authorized Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Maximum Maximum [Member] Inventory [Domain] Inventory [Domain] Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Equity securities, gain Equity Securities, FV-NI, Gain (Loss) Reserves for sales returns and allowances Allowance For Sales Returns And Allowances Allowance For Sales Returns And Allowances Business Acquisition [Line Items] Business Acquisition [Line Items] NAI ownership of ViacomCBS Corp. Class A and Class B common stock on a combined basis (percentage) Ownership Percent Of Class A And Class B Stock By Controlling Stockholder Percent of Company Corp. 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