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Merger-related costs Business Combination, Acquisition Related Costs 2022 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year One Other intangible assets Other Intangible Assets [Member] Advertising Marketing and Advertising Expense [Abstract] Other bank borrowings Notes Payable to Bank CBS Studio Center CBS Studio Center [Member] CBS Studio Center Common stock dividends Dividends, Common Stock, Cash Security Exchange Name Security Exchange Name Forfeited (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Preferred stock dividends Preferred stock dividends Dividends, Preferred Stock Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term 5.90% Senior Notes due 2040 Senior Notes 2040 [Member] Foreign Currency Translation and Transactions Foreign Currency Transactions and Translations Policy [Policy Text Block] Current liabilities Liability, Defined Benefit Plan, Current Components of net periodic cost: Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] Write-down of investments Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Investment, Name [Axis] Investment, Name [Axis] Derivative Financial Instruments Derivatives, Policy [Policy Text Block] Number of shares available for future grant under equity incentive plans (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Deferred compensation Deferred Compensation Liability, Current and Noncurrent Net increase (decrease) in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Noncontrolling interests Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Amount Lease income Operating Lease, Lease Income 2023 Long-Term Debt, Maturity, Year Two Intangible assets Deferred Tax Liabilities, Intangible Assets Increase in income taxes Increase (Decrease) in Income Taxes Payable 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. Intrinsic value of stock option exercises Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Foreign currency hedges Foreign Currency Contracts, Liability, Fair Value Disclosure Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Gain on sale of property Gain (Loss) on Disposition of Assets In process and other Film, Monetized in Film Group, Capitalized Cost, Production Interest income Interest Income, Other Charged to Expenses and Other Accounts SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense Amortization expense Amortization of Intangible Assets Restructuring Reserve Rollforward Schedule of Restructuring Reserve by Type of Cost [Table Text Block] Remaining authorization under repurchase program Stock Repurchase Program, Remaining Authorized Repurchase Amount Write down property and equipment Impairment of Long-Lived Assets to be Disposed of Additions for prior year tax positions Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Proceeds from issuance of senior notes Proceeds from Issuance of Senior Long-term Debt Deferred income tax assets, net Deferred Tax Assets, Net Guaranteed cash flow period Guaranteed Cash Flow Period Guaranteed Cash Flow Period Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Current Programming and Other Inventory Schedule of Inventory, Current [Table Text Block] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Revenue recognized Contract with Customer, Liability, Revenue Recognized Reclassification of income tax effect of the Tax Reform Act Tax effects reclassified to retained earnings Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect Deferred income tax assets, net Deferred Tax Assets, Net of Valuation Allowance Business Combination and Asset Acquisition [Abstract] Business Acquisition [Axis] Business Acquisition [Axis] Cash flow hedging Cash Flow Hedging [Member] 3.50% Senior Notes due 2025 Senior Notes Due 2025 [Member] Senior Notes Due 2025 [Member] Reference Rate Reform Line of Credit Facility [Abstract] Schedule of Indefinite-lived Intangible Assets Schedule of Indefinite-Lived Intangible Assets [Table Text Block] Award Type [Domain] Award Type [Domain] Local Phone Number Local Phone Number Estimated liability Guarantor Obligations, Current Carrying Value Sale of investments, gain Gain (Loss) on Sale of Investments Accrued programming and production costs Program Rights Obligations, Current Amortization of actuarial losses (gains) Defined Benefit Plan, Amortization of Gain (Loss) Exercisable (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Goodwill and Intangible Assets Goodwill and Intangible Assets, Policy [Policy Text Block] 5.75% Series A Mandatory Convertible Preferred Stock, par value $.001 per share; 25 shares authorized and 10 shares issued (2021) Preferred Stock, Value, Issued CBS Studio Center, Portion Of Los Angeles Building CBS Studio Center, Portion Of Los Angeles Building [Member] CBS Studio Center, Portion Of Los Angeles Building Shares issued, price per share (in shares) Shares Issued, Price Per Share Long-term debt extensible list Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Retained Earnings Retained Earnings [Member] Weighted average assumptions used to determine net periodic costs for the year ended December 31: Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract] Fair value of senior debt Debt Instrument, Fair Value Disclosure Number of beneficiary trustees Number Of Beneficiary Trustees Number Of Beneficiary Trustees Lease asset Deferred Tax Liabilities, Leasing Arrangements Other Related Parties Other Related Parties [Member] Other Related Parties [Member] Variable interest entity, ownership percentage Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage 2024 Recorded Unconditional Purchase Obligation, to be Paid, Year Three Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Distributions Redeemable Noncontrolling Interest Distributions Distributions to the redeemable noncontrolling interest holder. 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Chilevisión, Fox TeleColombia, and Estudios TeleMexico Acquisition Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Scenario [Axis] Scenario [Axis] Impairment charge Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) LIABILITIES AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Amount included in reserve for uncertain tax positions that would affect Company's effective income tax rate (including discontinued operations) if recognized Unrecognized Tax Benefits that Would Impact Effective Tax Rate Hedging Relationship [Domain] Hedging Relationship [Domain] 4.95% Senior Notes due 2050 Senior Notes Due 2050 [Member] Senior Notes Due 2050 [Member] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Table] Equity securities, gain Equity Securities, FV-NI, Gain (Loss) Entity Interactive Data Current Entity Interactive Data Current 2027 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Asset Disposal Group, Including Discontinued Operation, Operating Lease, Right-of-Use Asset Retirement Plan Sponsor Location [Axis] Retirement Plan Sponsor Location [Axis] AFTRA Retirement Plan AFTRA Retirement Plan [Member] Multiemployer defined benefit plan to which the Company contributes. RSUs and PSUs Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) [Member] Restricted Stock Units (RSUs) and Performance Stock Units (PSUs) 2026 Recorded Unconditional Purchase Obligation, to be Paid, Year Five Federal Current Federal Tax Expense (Benefit) Total lease liabilities Present value of minimum payments Operating Lease, Liability Document Transition Report Document Transition Report Common stock Common Stock, Value, Issued Net earnings from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Weighted average discount rate Finance Lease, Weighted Average Discount Rate, Percent CBS Television City CBS Television City [Member] CBS Television City [Member] Total Liabilities Disposal Group, Including Discontinued Operation, Liabilities Weighted average period over which future expense of unrecognized stock-based compensation will be recognized (years) Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 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 4.75% Senior Notes due 2025 Senior Notes Due 2025 4.75 [Member] Senior Notes Due 2025 4.75 [Member] Leases Lessee, Operating Leases [Text Block] Amortization of right-of-use assets Finance Lease, Right-of-Use Asset, Amortization Payments to noncontrolling interests Payments To Noncontrolling Interests Dividends And Other Distributions Amount of cash outflow to noncontrolling interests, including ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests and other distributions to noncontrolling interests Unfunded status at year end Funded status at end of year Defined Benefit Plan, Funded (Unfunded) Status of Plan Reserves for sales returns and allowances Allowance For Sales Returns And Allowances Allowance For Sales Returns And Allowances Acquisitions Business Combination Disclosure [Text Block] Potential change Debt Instrument, Interest Rate, Potential Change Debt Instrument, Interest Rate, Potential Change ICFR Auditor Attestation Flag ICFR Auditor Attestation Flag Other Commitments [Table] Other Commitments [Table] Rollforward of RSU and PSU Activity Share-based Payment Arrangement, Activity [Table Text Block] Individual monetization Film, Monetized on Its Own, Amortization Expense Expected amortization, acquired programming, 2024 Entertainment, License Agreement for Program Material, Expected Amortization, Year Three Ownership [Axis] Ownership [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Foreign Deferred Foreign Income Tax Expense (Benefit) Legal Entity [Axis] Legal Entity [Axis] Dilutive effect of shares issuable under stock-based compensation plans (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Goodwill Rollforward [Line Items] Goodwill [Line Items] Revenues by Customer Location Revenue from External Customers by Geographic Areas [Table Text Block] Projected health care cost trend rate Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year Class of Stock [Axis] Class of Stock [Axis] Income Tax Authority [Axis] Income Tax Authority [Axis] Goodwill, net of impairment, Acquisitions (Dispositions) Goodwill, Acquired (Disposed) During Period, Net Goodwill, Acquired (Disposed) During Period, Net 2027 Finance Lease, Liability, to be Paid, after Year Five Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Revenues Revenue from Related Parties Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity [Domain] Entity [Domain] Accrued expenses Accrued Liabilities, Current Revenues Revenue from Contract with Customer, Excluding Assessed Tax Goodwill and Intangible Assets Intangible Assets, Net (Including Goodwill) [Abstract] Stock options Share-based Payment Arrangement, Option [Member] 4.25% Senior Notes due 2023 Senior Notes Sep 2023 [Member] Senior notes due in 2023 with a discount rate of 4.250%. Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Variable Rate [Axis] Variable Rate [Axis] Segment Information Segment Reporting Disclosure [Text Block] Other comprehensive income (loss) before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Weighted average remaining lease term Finance Lease, Weighted Average Remaining Lease Term Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Directors Guild of America - Producer Directors Guild Of America Producer [Member] Multiemployer defined benefit plan to which the Company contributes. Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Document Fiscal Year Focus Document Fiscal Year Focus Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Variable Rate [Domain] Variable Rate [Domain] Additional Paid-In Capital Additional Paid-in Capital [Member] Debt redemptions and repayments, cash Repayments of Debt 2027-2031 Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Purchase obligations Total Unrecorded Unconditional Purchase Obligation Minimum Class A shares needed for conversion (in shares) Minimum Class A Shares For Conversion The minimum number of class A shares that need to be outstanding for holders to convert their class A shares to class B shares. Other Assets Other Assets [Member] Other items, net Other items, net Other Nonoperating Income (Expense) Other investing activities Payments for (Proceeds from) Other Investing Activities Programming charges Programming charges Programming Charges Programming Charges Maximum Maximum [Member] Share-based Payment Arrangement [Abstract] Share-based Payment Arrangement [Abstract] Award Type [Axis] Award Type [Axis] Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] 4.60% Senior Notes due 2045 Senior Notes Due 2045 [Member] Senior Notes Due 2045 [Member] Lessee, Operating Lease, Future Lease Payments Lessee, Operating Lease, Liability, Maturity [Table Text Block] Total ViacomCBS stockholders’ equity Stockholders' Equity Attributable to Parent U.S. small capitalization Defined Benefit Plan, Equity Securities, US, Small Cap [Member] Costs and expenses: Disposal Group, Including Discontinued Operation, Cost and Expenses [Abstract] Disposal Group, Including 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Asbestos Claims Asbestos Issue [Member] Remaining term Lessee, Operating Lease, Term of Contract Commitment to invest, annual amount Business Combination Five Year Commitment, Annual Amount Business Combination Five Year Commitment, Annual Amount Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Obligations under finance leases Total lease liabilities Present value of minimum payments Finance Lease, Liability Fair value of plan assets Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Plan Assets Total deferred income tax liabilities Deferred Tax Liabilities, Gross Business Acquisition [Line Items] Investments [Line Items] Business Acquisition [Line Items] Equity securities Defined Benefit Plan, Equity Securities [Member] Value of equity method investments Equity Method Investments Income Statement [Abstract] Income Statement [Abstract] Entity Registrant Name Entity Registrant Name Noncurrent receivables Accounts Receivable, before Allowance for Credit Loss, Noncurrent POP POP [Member] POP formerly known as TVGN, TV Guide Network 2024 Finance Lease, Liability, to be Paid, Year Three Future Production Costs Future Production Costs [Member] Future Production Costs [Member] 2025 Finance Lease, Liability, to be Paid, Year Four Deductions SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction Television programming and feature film cost amortization Television And Feature Film Programming Amortization Television And Feature Film Programming Amortization Participants’ contributions Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant (Provision) benefit for income taxes Provision (benefit) for income taxes Income Tax Expense (Benefit) Other Commitments [Domain] Other Commitments [Domain] South Park South Park [Member] South Park 2024 Defined Benefit Plan, Expected Future Benefit Payment, Year Three Receivables, net Accounts Receivable, after Allowance for Credit Loss, Current 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Used to reflect the noncurrent portion of the liabilities (due after one year or the normal operating cycle if longer). Use of Estimates Use of Estimates, Policy [Policy Text Block] Completed, not yet released Film, Monetized on Its Own, Capitalized Cost, Completed and Not Released Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Finance Finance Lease, Liability, Payment, Due [Abstract] Film group monetization Film, Monetized in Film Group, Amortization Expense Title of 12(b) Security Title of 12(b) Security Investment, Name [Domain] Investment, Name [Domain] Common Stock, shares authorized (in shares) Common Stock, Shares Authorized 4.50% Senior Debentures due 2042 Senior Debentures Feb 2042 [Member] Senior debentures due Feb 2042 at discount rate 4.500%. 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Restructuring charges Charges Restructuring Charges 2022 Other Commitment, to be Paid, Year One Period for consolidated EBITDA Debt Instrument, Period for Consolidated EBITDA Debt Instrument, Period for Consolidated EBITDA Feature Film Feature Film [Member] Feature Film [Member] Finance Finance Lease [Abstract] Finance Lease [Abstract] 4.20% Senior Notes due 2029 Senior Notes Due 2029 [Member] Senior Notes Due 2029 [Member] 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Three Foreign Foreign Tax Authority [Member] Proceeds from dispositions Proceeds From Divestiture Of Businesses and Interests In Affiliates And Assets Proceeds From Divestiture Of Businesses and Interests In Affiliates And Assets Deferred income tax liabilities: Deferred Tax Liabilities, Gross [Abstract] Exit costs and other Exit Costs And Other [Member] Exit Costs And Other Business Combinations Business Combinations Policy [Policy Text Block] Adjusted OIBDA Adjusted Operating Income Before Depreciation And Amortization Adjusted Operating Income Before Depreciation And Amortization Participants’ share and royalties payable Accrued Royalties, Current Conversion of Mandatory Convertible Preferred Stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock Restructuring Charges [Abstract] Restructuring Charges [Abstract] Derivative [Table] Derivative [Table] I.A.T.S.E. Local No. 33 Pension Trust Fund I.A.T.S.E. Local No. 33 Pension Trust Fund [Member] I.A.T.S.E. 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Purchase Obligation, to be Paid, Year Four Property and Equipment Property, Plant and Equipment [Table Text Block] Income Statement Location [Domain] Income Statement Location [Domain] 3.375% Senior Notes due 2028 Senior Notes Due 2028 [Member] Senior Notes Due 2028 [Member] Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward] 2024 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Three Assets held for sale Assets Held-For-Sale, Noncurrent Assets Held-For-Sale, Noncurrent Stockholders' Equity Shareholders' Equity and Share-based Payments [Text Block] Collaborative Arrangements Collaborative Arrangement, Accounting Policy [Policy Text Block] Schedule of Expected Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Treasury Stock Treasury Stock, Policy [Policy Text Block] Treasury Stock, Policy [Policy 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Exercise Price Costs and expenses: Costs and Expenses [Abstract] Net gain on sales Net gain on sales Gain (Loss) On Disposition Of Assets And Sale Of Business Gain (Loss) On Disposition Of Assets And Sale Of Business Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Number of trustees Number of Trustees Number of Trustees of Chairman Emeritus Trust Entity Current Reporting Status Entity Current Reporting Status 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 Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Other liabilities Disposal Group, Including Discontinued Operation, Other Liabilities, Noncurrent Effective income tax rate Effective Income Tax Rate Reconciliation, Percent Expected contribution in the next fiscal year Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year Restructuring, and Other Corporate Matters Business Acquisition, Integration, Restructuring and Other Related Costs [Text Block] Debt Debt, Current Television Licensing Television Licensing [Member] Television Licensing [Member] Balance, beginning of year (shares) Balance, end of year (shares) Shares, Issued United States UNITED STATES Leases Leases [Abstract] Eliminations/Corporate Corporate and Eliminations [Member] Income Taxes Income Tax, Policy [Policy Text Block] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Qualified Plan Qualified Plan [Member] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Entity Address, Postal Zip Code Entity Address, Postal Zip Code 6.75% Senior Debentures due 2037 Senior Debentures Oct 2037 [Member] Senior debentures due in Oct 2037 with a discount rate of 6.750%. Programming and other inventory Total noncurrent programming and other inventory Inventory, Noncurrent 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. Class A and Class B Common Stock, on a combined basis, owned by controlling stockholder as of the financial statement date Revenues Revenue from Contract with Customer [Policy Text Block] Other comprehensive income (loss) from continuing operations, net of tax (ViacomCBS and noncontrolling interests) Other Comprehensive Income (Loss), Continuing Operations, Net of Tax Other Comprehensive Income (Loss), Continuing Operations, Net of Tax Diluted (in shares) Weighted average shares for diluted EPS (in shares) Weighted Average Number of Shares Outstanding, Diluted United States Income (Loss) from Continuing Operations before Income Taxes, Domestic Percentage of fair value in excess of carrying amount Indefinite Lived Intangible Assets, Percentage Of Fair Value In Excess Of Carrying Amount Indefinite Lived Intangible Assets, Percentage Of Fair Value In Excess Of Carrying Amount Income Taxes Income Tax Disclosure [Text Block] Liabilities of discontinued operations Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Related Party [Domain] Related Party [Domain] Rollforward of Stock Option Activity Share-based Payment Arrangement, Option, Activity [Table Text Block] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] 2023 Recorded Unconditional Purchase Obligation, to be Paid, Year Two Other Foreign Currency Other Foreign Currency [Member] Other Foreign Currency [Member] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Class of Stock [Line Items] Class of Stock [Line Items] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Credit Facility [Axis] Credit Facility [Axis] Entity Address, Address Line One Entity Address, Address Line One Retirement Plan Sponsor Location [Domain] Retirement Plan Sponsor Location [Domain] 5.25% Senior Debentures due 2044 Senior Debentures Apr 2044 [Member] Senior Debentures Apr 2044 [Member] Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Principles of Consolidation Consolidation, Policy [Policy Text Block] Entity Shell Company Entity Shell Company Total current liabilities Liabilities, Current Payment of payroll taxes in lieu of issuing shares for stock-based compensation Payment, Tax Withholding, Share-based Payment Arrangement Intersegment Eliminations Intersegment Eliminations [Member] Share of equity investee Other Comprehensive Income (Loss), Defined Benefit Plan, Share Of Equity Investee, before Tax Other Comprehensive Income (Loss), Defined Benefit Plan, Share Of Equity Investee, before Tax Famous Players Famous Players [Member] Famous Players [Member] Foreign exchange forward Foreign Exchange Forward [Member] 3.70% Senior Notes due 2024 Senior Notes Due 2024 [Member] Senior Notes Due 2024 Loss Contingencies [Table] Loss Contingencies [Table] Current Fiscal Year End Date Current Fiscal Year End Date 7.875% Senior Debentures due 2030 Senior Debentures Due 2030 [Member] Senior Debentures Due 2030 Nonqualified Plan Nonqualified Plan [Member] Financial Instruments Financial Instruments Disclosure [Text Block] Net cash flow provided by operating activities from continuing operations Net Cash Provided by (Used in) Operating Activities, Continuing Operations Number of defendants Loss Contingency, Number of Defendants Mutual funds Mutual Fund [Member] Statement [Table] Statement [Table] Marketable securities, unrealized gain (loss) Marketable Securities, Unrealized Gain (Loss) Additional Financial Information Disclosure [Abstract] Additional Financial Information Disclosure [Abstract] Additional Financial Information Disclosure [Abstract] Accumulated benefit obligation Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation Recently Adopted Accounting Pronouncements and Accounting Pronouncements Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Other Deferred Tax Assets, Other Other Commitments [Axis] Other Commitments [Axis] 2026 Defined Benefit Plan, Expected Future Benefit Payment, Year Five 4.875% Senior Debentures due 2043 Senior Debentures June 2043 [Member] Senior debentures due June 2043 with a discount rate of 4.875%. Schedule of Amounts Recognized in Other Comprehensive Income (Loss) Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] Number of new asbestos claims Loss Contingency, New Claims Filed, Number Statistical Measurement [Axis] Statistical Measurement [Axis] Expected amortization, internally produced programming, Film group monetization, 2022 Film, Monetized in Film Group, Released Film, Expected Amortization, Year One Restructuring and Other Corporate Matters Restructuring Charges And Other [Member] Restructuring Charges And Other [Member] Long-term debt Finance Lease, Liability, Noncurrent Cable Networks Cable Networks Segment [Member] Cable Networks Segment Guarantees Guarantees, Indemnifications and Warranties Policies [Policy Text Block] Net Finite-Lived Intangible Assets, Net Goodwill Goodwill, net of impairment, beginning balance Goodwill, net of impairment, ending balance Goodwill Cash and cash equivalents Defined Benefit Plan, Cash and Cash Equivalents [Member] Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Fair Value Measured at net asset value Fair Value Measured at Net Asset Value Per Share [Member] Scenario [Domain] Scenario [Domain] 7.125% Senior Notes due 2023 Senior Notes Due 2023 [Member] Senior Notes Due 2023 [Member] Schedule of Changes in Book Value of Goodwill by Segment Schedule of Goodwill [Table Text Block] Adjustments to reconcile net earnings from continuing operations to net cash flow provided by operating activities from continuing operations: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Operating lease cost Operating Lease, Cost Film development costs, expense period Film Development Costs, Expense Period Film Development Costs, Expense Period Equity in loss of investee companies, net of tax and distributions Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Related Parties Related Party Transactions Disclosure [Text Block] Liability Hedging Defined Benefit Plan, Derivative [Member] Net Actuarial Loss and Prior Service Cost Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Inventory [Line Items] Inventory [Line Items] Individual Monetization: Film, Capitalized Cost [Abstract] Expected amortization, internally produced programming, Individual monetization, 2023 Film, Monetized on Its Own, Released Film, Expected Amortization, Year Two Deferred tax provision (benefit) Total deferred Deferred Income Tax Expense (Benefit) Carrying value of senior debt Senior Notes 4.375% Senior Debentures due 2043 Senior Debentures Mar 2043 [Member] Senior debentures due in 2043 with a discount rate of 4.375%. Viacom18 Viacom18 [Member] Viacom18 [Member] Goodwill Disposal Group, Including Discontinued Operation, Goodwill Net Earnings per Common Share Earnings Per Share, Policy [Policy Text Block] Receivables, net Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net TV Entertainment TV Entertainment Segment [Member] TV Entertainment Segment (Repayments of) proceeds from short-term debt borrowings, net Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Net earnings attributable to ViacomCBS Net earnings attributable to ViacomCBS Net Income (Loss) Attributable to Parent Operating lease assets Operating Lease, Right-of-Use Asset Pension and Postretirement Benefits Pension and Other Postretirement Plans, Policy [Policy Text Block] Gain on sale of equity method investment Equity Method Investment, Realized Gain (Loss) on Disposal Interest cost Defined Benefit Plan, Interest Cost Income Statement Location [Axis] Income Statement Location [Axis] Accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Statistical Measurement [Domain] Statistical Measurement [Domain] Stock Option Exercise Information Cash Proceeds Received and Tax Benefit from Share-based Payment Awards [Table Text Block] FCC Licenses Impairment Test, One Market FCC Licenses Impairment Test, One Markets [Member] FCC Licenses Impairment Test, One Markets Scheduled Maturities of Long-term Debt at Face Value Schedule of Maturities of Long-term Debt [Table Text Block] Sale of business, consideration Disposal Group, Including Discontinued Operation, Consideration Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Proceeds from disposition Proceeds from Sale of Property, Plant, and Equipment Revenue from Contract with Customer [Abstract] Total programming and other inventory Inventory Total Total current and noncurrent inventory. Additional paid-in capital Additional Paid in Capital, Common Stock Percent of plan assets' fair value invested in Company common stock Percent Of Plan Assets Fair Value Invested In Company Common Stock The percent of plan assets invested in Company common stock. Restructuring Type [Axis] Restructuring Type [Axis] Other assets Other Assets, Noncurrent Production and licensing of television and film programming Production Licensing Of Programming [Member] Production and licensing of television and film programming [Member] Ultimate trend rate Defined Benefit Plan, Ultimate Health Care Cost Trend Rate Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Segments [Axis] Segments [Axis] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Entity File Number Entity File Number Lessee, lease term Lessee, Term Of Contract Lessee, Term Of Contract Operating expenses Related Party Transaction, Expenses from Transactions with Related Party Planned dispositions Business Exit Costs Forfeited or expired (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Dispositions Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Postretirement Benefits Plan, Post-65 Other Postretirement Benefits Plan, Post-65 [Member] Other Postretirement Benefits Plan, Post-65 SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] Retirement Plan Name [Domain] Retirement Plan Name [Domain] Excess tax (benefit) deficiency from stock-based compensation Tax Benefit Realized From Employee Stock Option Exercises And Restricted Share Vests Disclosure of the difference between the tax benefit from stock-based compensation expense and the deduction on the tax return associated with the exercise of stock options and vesting of RSUs. Settlement of commercial dispute Litigation Settlement, Expense Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Goodwill, net of impairment, Foreign Currency Goodwill, Foreign Currency Translation Gain (Loss), Net Goodwill, Foreign Currency Translation Gain (Loss), Net Variable lease cost Variable Lease, Cost Long-term debt Total long-term debt, net of current portion Long-term Debt and Lease Obligation Components of Other Items, Net Supplemental Income Statement Disclosure [Table Text Block] Supplemental Income Statement Disclosure [Table Text Block] U.S. large capitalization Defined Benefit Plan, Equity Securities, US, Large Cap [Member] Buildings and building improvements Buildings Building [Member] Impairment charge on equity-method investment Equity Method Investment, Other than Temporary Impairment Multiemployer Plans [Line Items] Multiemployer Plan [Line Items] Granted (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Aggregate fair value of RSUs vested during the period Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Actual return on plan assets Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) Gross property and equipment Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, before Accumulated Depreciation and Amortization Disposal Group Name [Axis] Disposal Group Name [Axis] Pension and postretirement benefit obligations Noncurrent liabilities Liability, Defined Benefit Plan, Noncurrent Credit Facility [Domain] Credit Facility [Domain] ASSETS Assets [Abstract] 2026 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Five Related Party Transactions [Abstract] Related Party Transactions [Abstract] Redemption value adjustment Noncontrolling Interest, Change in Redemption Value Operating Direct Operating Costs 2024 Long-Term Debt, Maturity, Year Three ViacomCBS Credit Facility ViacomCBS Credit Facility [Member] ViacomCBS Credit Facility [Member] Accumulated impairment losses, beginning balance Accumulated impairment losses, ending balance Goodwill, Impaired, Accumulated Impairment Loss Land Land [Member] Stock-based compensation expense included in discontinued operations Disposal Group, Including Discontinued Operation, Share-Based Compensation Expense Disposal Group, Including Discontinued Operation, Share-Based Compensation Expense Segment Reconciling Items Segment Reconciling Items [Member] Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 2025 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, Year Four Goodwill and Other Intangible Assets Goodwill and Intangible Assets Disclosure [Text Block] Fair value Share-based Compensation Arrangement By Share-based Payment Award, Options, Granted In Period, Fair Value Share-based Compensation Arrangement By Share-based Payment Award, Options, Granted In Period, Fair Value Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Outstanding (shares), beginning balance Outstanding (shares), ending balance Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Discount rate Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Trade names Trade Names [Member] Debt Instrument [Axis] Debt Instrument [Axis] Advertising Advertising Cost [Policy Text Block] 2.90% Senior Notes due 2027 Senior Notes Due 2027 [Member] Senior Notes Due 2027 [Member] Stock-Based Compensation Expense Stock-Based Compensation Expense [Member] Stock-Based Compensation Expense [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Cash balance interest crediting rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Weighted-Average Interest Crediting Rate Film Libraries Film Libraries, Acquired [Member] Film Libraries, Acquired [Member] Tax benefits from positions relating to the Tax Reform Act Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount Related Party [Axis] Related Party [Axis] Acquired program rights, including prepaid sports rights Entertainment, License Agreement for Program Material, Capitalized Cost Amortization of prior service cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Long-lived Assets by Geographic Area Long-lived Assets by Geographic Areas [Table Text Block] Inventory, Current [Table] Inventory, Current [Table] Income tax provision Provision for income taxes for discontinued operations Discontinued Operation, Tax Effect of Discontinued Operation Noncash additions to operating lease assets Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Remaining ownership acquired Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage Components of Deferred Income Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Other, net Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Defined benefit plan, target plan asset allocations Defined Benefit Plan, Plan Assets, Target Allocation, Percentage Actuarial (loss) gain Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Remaining availability Line of Credit Facility, Remaining 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(loss) from discontinued operations Other Comprehensive Income (Loss), Discontinued Operations, Net of Tax Other Comprehensive Income (Loss), Discontinued Operations, Net of Tax Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Film Group Monetization: Entertainment, Film [Abstract] Reserve for inventory obsolescence SEC Schedule, 12-09, Reserve, Inventory [Member] Cost for settlement and defense of asbestos claims, net of insurance recoveries and tax benefits Liability for Asbestos and Environmental Claims, Net, Incurred Loss Operating lease payments, included in operating cash flows Operating Lease, Payments Preferred stock, percentage Preferred Stock, Dividend Rate, Percentage Long Lived Assets Held-for-sale, Name [Domain] Long Lived Assets Held-for-sale, Name [Domain] Purchase price Consideration transferred Business Combination, Consideration Transferred Provision for doubtful accounts Accounts Receivable, Credit Loss Expense (Reversal) 2.90% Senior Notes due 2023 Senior Notes Due 2023 2.90 Percent [Member] Senior Notes Due 2023 2.90 Percent [Member] Outstanding principal Long-term Debt, Gross Goodwill Goodwill [Roll Forward] Financing obligations Deferred Tax Liabilities, Financing Arrangements Operating and SG&A Expense Operating Expense And Selling General And Administrative Expenses [Member] Operating Expense And Selling General And Administrative Expenses Net earnings from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Property and equipment, net Finance Lease, Right-of-Use Asset, after Accumulated Amortization Total Assets Assets, Fair Value Disclosure Change in reserve for uncertain tax positions, excluding related accrued interest and penalties Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward] 4.85% Senior Notes due 2042 Senior Notes 2042 [Member] Total Liabilities and Stockholders’ Equity Liabilities and Equity Net earnings from discontinued operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Deferred revenues Contract with Customer, Liability, Current fuboTV fuboTV [Member] fuboTV 2026 Lessee, Operating Lease, Liability, to be Paid, Year Five Exercised (USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Benefits paid Defined Benefit Plan, Plan Assets, Benefits Paid Tax benefit of stock option exercises Share-based Payment Arrangement, Exercise of Option, Tax Benefit Deferred income taxes Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Derivative [Line Items] Derivative [Line Items] Foreign currency hedges Foreign Currency Contract, Asset, Fair Value Disclosure Restructuring 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Statement [Line Items] Statement [Line Items] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] SEC Schedule, 12-09, Valuation Allowances and Reserves [Domain] 5.625% Senior Notes due 2019 Senior Notes Sept 2019 [Member] Senior notes due in Sept 2019 with a discount rate of 5.625%. Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Investments Investments Retirement Plan Type [Domain] Retirement Plan Type [Domain] (Decrease) increase in pension and postretirement benefit obligations Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits Restructuring and other corporate matters Restructuring and other corporate matters Restructuring and other corporate matters Restructuring Charges And Other Restructuring and other corporate matters Debt Disclosure [Abstract] Debt Disclosure [Abstract] Stock-based Compensation Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] Assumptions Regarding Heath Care Cost Trend Rates for Postretirement Benefits Schedule of Health Care Cost Trend Rates [Table Text Block] Property, Plant and Equipment, Type [Axis] Long-Lived Tangible Asset [Axis] Valuation allowance Valuation allowance Deferred Tax Assets, Valuation Allowance Current liabilities of discontinued operations Other current liabilities Disposal Group, Including Discontinued Operation, Liabilities, Current Corporate Corporate, Non-Segment [Member] Producer-Writers Guild of America Producer Writers Guild Of America [Member] Multiemployer defined benefit plan to which the Company contributes. Revenues Disposal Group, Including Discontinued Operation, Revenue Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Pension and Other Postretirement Benefits Retirement Benefits [Text Block] Granted (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Document Annual Report Document Annual Report Forecast Forecast [Member] 5.875% Junior Subordinated Debentures due 2057 Junior Subordinated Debentures February 2057, 5-Year Hybrid [Member] Junior Subordinated Debentures February 2057, 5-Year Hybrid [Member] 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 FCC licenses Operating and Broadcast Rights [Member] Disposal Group, Disposed of by Sale, Not Discontinued Operations Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Proceeds from issuance of common stock Proceeds from Issuance of Common Stock Total Assets Total Assets Total assets Assets Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Geographical [Domain] Geographical [Domain] 3.25% Senior Notes due 2023 Senior Notes Mar 2023 [Member] Senior notes due in 2023 with a discount rate of 3.250%. 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Expected timing of satisfaction period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Net cash flow provided by operating activities Net Cash Provided by (Used in) Operating Activities Home entertainment Home Entertainment And Publishing Inventory, Net Of Allowances Home Entertainment And Publishing Inventory, Net Of Allowances Schedule of Debt Schedule of Debt [Table Text Block] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Cash and Cash Equivalents [Line Items] Cash and Cash Equivalents [Line Items] Basic net earnings per common share attributable to ViacomCBS: Earnings Per Share, Basic [Abstract] Retiree Medicare drug subsidy Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt 2027 and thereafter Other Commitment, to be Paid, after Year Five PlutoTV PlutoTV [Member] PlutoTV [Member] Basic (in shares) Weighted average shares for basic EPS (in shares) Weighted Average Number of Shares Outstanding, Basic Net earnings (in dollars per share) Earnings Per Share, Diluted Segments [Domain] Segments [Domain] Expected amortization, internally produced programming, Film group monetization, 2024 Film, Monetized in Film Group, Released Film, Expected Amortization, Year Three Participation in Multi-employer Defined Benefit Pension Plan Multiemployer Plan [Table Text Block] 2023 Unrecorded Unconditional Purchase Obligation, to be Paid, Year Two Commitments Contractual Obligation, Fiscal Year Maturity [Table Text Block] Service cost Defined Benefit Plan, Service Cost Net actuarial (loss) gain Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax Total cash paid for income taxes Income Taxes Paid, Net International Non-US [Member] Translation adjustment Temporary Equity, Foreign Currency Translation Adjustments Finance lease cost: Lease, Cost [Abstract] Schedule of Restructuring and Related Costs [Table] Schedule of Restructuring and Related Costs [Table] Finite-lived Intangible Assets Amortization Expense Finite-lived Intangible Assets Amortization Expense [Table Text Block] Intangible assets, net Total intangible assets Intangible Assets, Net (Excluding Goodwill) Comprehensive income attributable to ViacomCBS Comprehensive Income (Loss), Net of Tax, Attributable to Parent Severance Severance costs Employee Severance [Member] Deferred revenue Contract with Customer, Liability Other Comprehensive Income (Loss) Other Comprehensive Income, Discontinued Operations [Member] Other Comprehensive Income, Discontinued Operations Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Auditor Information [Abstract] Auditor Information [Abstract] Funded Status and Amounts Recognized on Consolidated Balance Sheets Schedule of Amounts Recognized in Balance Sheet [Table Text Block] Deferred income tax liabilities, net Deferred Income Tax Liabilities, Net 2025 Other Commitment, to be Paid, Year Four Conversion of A shares into B shares (shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Stock Options and RSUs Stock Options And Restricted Stock Units [Member] Stock Options and Restricted Stock Units [Member] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Net earnings from continuing operations (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Corporate bonds Corporate Debt Securities [Member] Reconciliation of U.S. Federal Statutory Income Tax Rate Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Variable Interest Entity, Primary Beneficiary Variable Interest Entity, Primary Beneficiary [Member] Accounts payable Accounts Payable, Current Total ViacomCBS Stockholders’ Equity Parent [Member] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Stock-based compensation expense, net of tax benefit Share-based Payment Arrangement, Expense, after Tax Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Increase in inventory and related program and participation liabilities, net Increase (Decrease) in Inventories 5.75% Series A Mandatory Convertible Preferred Stock, $0.001 par value Convertible Preferred Stock Convertible Preferred Stock [Member] Other items, net Disposal Group, Including Discontinued Operation, Other Income (Expense) Amount of income (expense) related to nonoperating activities, classified as other, attributable to disposal group, including, but not limited to, discontinued operation. Continuing operations Continuing Operations [Member] Restructuring and Related Activities [Abstract] Restructuring and Related Activities [Abstract] Class B Common Stock, $0.001 par value Common Class B Common Class B [Member] Entity Central Index Key Entity Central Index Key Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Deferred income tax assets: Deferred Tax Assets, Gross [Abstract] Number of consolidated claims Loss Contingency, Claims Consolidated, Number Loss Contingency, Claims Consolidated, Number Settlements paid Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement Junior subordinated notes Junior Subordinated Notes Total lease cost Lease, Cost Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Reductions for prior year tax positions Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Impairment Testing Assumptions [Table] Impairment Testing Assumptions [Table] Restructuring Charges Excluding Stock-Based Compensation and Lease Impairments Restructuring Charges Excluding Stock-Based Compensation And Lease Impairments [Member] Restructuring Charges Excluding Stock-Based Compensation And Lease Impairments [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Reserves and other accrued liabilities Deferred Tax Assets, Tax Deferred Expense National Amusements Inc Majority Shareholder [Member] Property and Equipment Property, Plant and Equipment Disclosure [Text Block] 5.85% Senior Debentures due 2043 Senior Debentures Sep 2043 [Member] Senior debentures due in 2043 with a discount rate of 5.850%. 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Including Discontinued Operation, Costs and Expense U.S. and Foreign Components of Earnings From Continuing Operations Before Income Taxes and Equity in Loss of Investee Companies Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] Class A Common Stock, $0.001 par value Common Class A Common Class A [Member] Leasehold improvement estimated useful life Property, Plant and Equipment, Estimated Useful Lives Common Stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Current Assets: Assets, Current [Abstract] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Other financing activities Proceeds from (Payments for) Other Financing Activities Gross Finite-Lived Intangible Assets, Gross 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. 4.95% Senior Notes due 2031 Senior Notes Due 2031 [Member] Senior Notes Due 2031 [Member] Schedule of Finite-lived Intangible Assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Impairment of Long-Lived Assets Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block] Streaming Streaming [Member] Streaming Net earnings from discontinued operations, net of tax Net earnings from discontinued operations, net of tax Less: Net earnings from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Exercised (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Fair Value, Recurring Fair Value, Recurring [Member] Service period over which grants vest Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Assets of discontinued operations Disposal Group, Including Discontinued Operation, Assets, Noncurrent Property and equipment, net extensible list Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] 2027-2031 Defined Benefit Plan, Expected Future Prescription Drug Subsidy Receipt, after Year Five Schedule of Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Statute of limitations lapses Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Five Expected amortization, internally produced programming, Individual monetization, 2022 Film, Monetized on Its Own, Released Film, Expected Amortization, Year One Auditor Firm ID Auditor Firm ID Net cash flow provided by (used for) investing activities Net Cash Provided by (Used in) Investing Activities Adjusted OIBDA by Segment Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Change in benefit obligation: Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] Change in assets and liabilities Increase (Decrease) in Operating Capital [Abstract] Vested (USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Class of Stock [Domain] Class of Stock [Domain] Upfront cash payment Payments to Acquire Businesses, Gross Dividends paid on preferred stock Payments of Ordinary Dividends, Preferred Stock and Preference Stock Other corporate matters Other Corporate Matters, Costs Other Corporate Matters, Costs Accelerated depreciation Restructuring and Related Cost, Accelerated Depreciation 6.875% Senior Debentures due 2036 Senior Debentures Apr 2036 [Member] Senior debentures due in 2036 with a discount rate of 6.875%. Purchase obligations Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract] Gain (loss) on non-designated foreign exchange contracts Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments Maximum borrowing capacity under credit facility Line of Credit Facility, Maximum Borrowing Capacity Reorganization of foreign operations Income Tax Reconciliation, Reorganization Of Foreign Operations Income Tax Reconciliation, Reorganization Of Foreign Operations Foreign Currency Goodwill, Foreign Currency Translation Gain (Loss) Finance lease accumulated depreciation and amortization Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Finance Lease Right-of-Use Asset, Accumulated Depreciation and Amortization Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Ownership [Domain] Ownership [Domain] Discount rate Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Current assets of discontinued operations Disposal Group, Including Discontinued Operation, Assets, Current Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Fair Value Measurements Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Long-lived assets Long-Lived Assets Rate of compensation increase Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase 2024 Other Commitment, to be Paid, Year Three Mortgage-backed and asset-backed securities Asset-backed Securities [Member] Advertising expense Advertising Expense Net amounts recognized Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position Amounts attributable to ViacomCBS: Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent [Abstract] Other assets Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent Net unamortized discount on senior debt Debt Instrument, Unamortized Discount (Premium), Net Taxes on income at U.S. federal statutory rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount 2.750% Senior Notes due 2019 Senior Notes Dec 2019 [Member] Senior notes due in December 2019 with a discount rate of 2.750%. Cash, cash equivalents and restricted cash at beginning of year (includes $135 (2021) $202 (2020) and $120 (2019) of restricted cash) Cash, cash equivalents and restricted cash at end of year (includes $135 (2020) and $202 (2019) of restricted cash) Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Period revenue is earned Ultimate Revenue, Period Revenue Is Earned Ultimate Revenue, Period Revenue Is Earned Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Preferred Stock Preferred Stock [Member] Total Recorded Unconditional Purchase Obligation Advertising Advertising [Member] Balance at Beginning of Period Balance at End of Period SEC Schedule, 12-09, Valuation Allowances and Reserves, Amount Supplemental Cash Flow Information Related to Leases Supplemental Cash Flow Information Leases [Table Text Block] Supplemental Cash Flow Information Leases [Table Text Block] Net earnings from continuing operations Net earnings from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Share conversion ratio Business Combination, Equity Interest Issued Or Issuable, Share Conversion Ratio Business Combination, Equity Interest Issued Or Issuable, Share Conversion Ratio Programming Inventory Inventory, Policy [Policy Text Block] 2027 and thereafter Unrecorded Unconditional Purchase Obligation, to be Paid, after Year Five Foreign Current Foreign Tax Expense (Benefit) Preferred stock, liquidation preference Preferred Stock, Liquidation Preference, Value Pension Benefits Pension Plan [Member] Expected amortization, internally produced programming, Film group monetization, 2023 Film, Monetized in Film Group, Released Film, Expected Amortization, Year Two Other comprehensive income (loss): Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax [Abstract] Finance leases Finance Lease, Right-of-Use Asset, before Accumulated Amortization Unbilled licensing receivables Deferred Tax Liabilities, Unbilled Licensing Receivables Deferred Tax Liabilities, Unbilled Licensing Receivables Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table]