| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.19.3.a.u2 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 675 </ContextCount> |
| <ElementCount> 822 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> false </FootnotesReported> |
| <SegmentCount> 201 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 10 </UnitCount> |
| <MyReports> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 0001000 - Document - COVER PAGE </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/CoverPage </Role> |
| | | <ShortName> COVER PAGE </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 1001000 - Statement - Consolidated Statements of Operations </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ConsolidatedStatementsOfOperations </Role> |
| | | <ShortName> Consolidated Statements of Operations </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 1002000 - Statement - Consolidated Statements of Comprehensive Income </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ConsolidatedStatementsOfComprehensiveIncome </Role> |
| | | <ShortName> Consolidated Statements of Comprehensive Income </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 1003000 - Statement - Consolidated Balance Sheets </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ConsolidatedBalanceSheets </Role> |
| | | <ShortName> Consolidated Balance Sheets </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 1003501 - Statement - Consolidated Balance Sheets (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ConsolidatedBalanceSheetsParenthetical </Role> |
| | | <ShortName> Consolidated Balance Sheets (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 1004000 - Statement - Consolidated Statements of Cash Flows </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ConsolidatedStatementsOfCashFlows </Role> |
| | | <ShortName> Consolidated Statements of Cash Flows </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 1004501 - Statement - Consolidated Statements of Cash Flows (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ConsolidatedStatementsOfCashFlowsParenthetical </Role> |
| | | <ShortName> Consolidated Statements of Cash Flows (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 1005000 - Statement - Consolidated Statements of Stockholders' Equity </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ConsolidatedStatementsOfStockholdersEquity </Role> |
| | | <ShortName> Consolidated Statements of Stockholders' Equity </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 2101100 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPolicies </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 2102100 - Disclosure - Property and Equipment </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PropertyAndEquipment </Role> |
| | | <ShortName> Property and Equipment </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 2103100 - Disclosure - Programming and Other Inventory </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ProgrammingAndOtherInventory </Role> |
| | | <ShortName> Programming and Other Inventory </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 2104100 - Disclosure - Goodwill and Other Intangible Assets </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssets </Role> |
| | | <ShortName> Goodwill and Other Intangible Assets </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 2105100 - Disclosure - Restructuring, Programming Charges and Other Corporate Matters </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMatters </Role> |
| | | <ShortName> Restructuring, Programming Charges and Other Corporate Matters </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 2106100 - Disclosure - Related Parties </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RelatedParties </Role> |
| | | <ShortName> Related Parties </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 2107100 - Disclosure - Acquisition and Investments </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/AcquisitionAndInvestments </Role> |
| | | <ShortName> Acquisition and Investments </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 2108100 - Disclosure - Debt </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/Debt </Role> |
| | | <ShortName> Debt </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 2109100 - Disclosure - Leases </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/Leases </Role> |
| | | <ShortName> Leases </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 2110100 - Disclosure - Financial Instruments </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/FinancialInstruments </Role> |
| | | <ShortName> Financial Instruments </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 2111100 - Disclosure - Fair Value Measurements </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/FairValueMeasurements </Role> |
| | | <ShortName> Fair Value Measurements </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 2112100 - Disclosure - Stockholders' Equity </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockholdersEquity </Role> |
| | | <ShortName> Stockholders' Equity </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 2113100 - Disclosure - Stock-Based Compensation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockBasedCompensation </Role> |
| | | <ShortName> Stock-Based Compensation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 2114100 - Disclosure - Income Taxes </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/IncomeTaxes </Role> |
| | | <ShortName> Income Taxes </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 2115100 - Disclosure - Pension and Other Postretirement Benefits </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefits </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 2116100 - Disclosure - Redeemable Noncontrolling Interest </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RedeemableNoncontrollingInterest </Role> |
| | | <ShortName> Redeemable Noncontrolling Interest </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 2117100 - Disclosure - Segment and Revenue Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformation </Role> |
| | | <ShortName> Segment and Revenue Information </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 2118100 - Disclosure - Discontinued Operations </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DiscontinuedOperations </Role> |
| | | <ShortName> Discontinued Operations </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 2119100 - Disclosure - Commitments and Contingencies </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/CommitmentsAndContingencies </Role> |
| | | <ShortName> Commitments and Contingencies </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 2123100 - Disclosure - Supplemental Financial Information </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SupplementalFinancialInformation </Role> |
| | | <ShortName> Supplemental Financial Information </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 2124100 - Disclosure - Quarterly Financial Data (Unaudited) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/QuarterlyFinancialDataUnaudited </Role> |
| | | <ShortName> Quarterly Financial Data (Unaudited) </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 2125100 - Disclosure - Schedule II - Valuation and Qualifying Accounts </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ScheduleIiValuationAndQualifyingAccounts </Role> |
| | | <ShortName> Schedule II - Valuation and Qualifying Accounts </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 2201201 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPolicies </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPolicies </ParentRole> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 2301302 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPolicies </ParentRole> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 2302301 - Disclosure - Property and Equipment (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PropertyAndEquipmentTables </Role> |
| | | <ShortName> Property and Equipment (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PropertyAndEquipment </ParentRole> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 2303301 - Disclosure - Programming and Other Inventory (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ProgrammingAndOtherInventoryTables </Role> |
| | | <ShortName> Programming and Other Inventory (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/ProgrammingAndOtherInventory </ParentRole> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 2304301 - Disclosure - Goodwill and Other Intangible Assets (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsTables </Role> |
| | | <ShortName> Goodwill and Other Intangible Assets (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssets </ParentRole> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R36.htm </HtmlFileName> |
| | | <LongName> 2305301 - Disclosure - Restructuring, Programming Charges and Other Corporate Matters (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMattersTables </Role> |
| | | <ShortName> Restructuring, Programming Charges and Other Corporate Matters (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMatters </ParentRole> |
| | | <Position> 36 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R37.htm </HtmlFileName> |
| | | <LongName> 2306301 - Disclosure - Related Parties (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RelatedPartiesTables </Role> |
| | | <ShortName> Related Parties (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RelatedParties </ParentRole> |
| | | <Position> 37 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R38.htm </HtmlFileName> |
| | | <LongName> 2307301 - Disclosure - Acquisition and Investments (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/AcquisitionAndInvestmentsTables </Role> |
| | | <ShortName> Acquisition and Investments (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/AcquisitionAndInvestments </ParentRole> |
| | | <Position> 38 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R39.htm </HtmlFileName> |
| | | <LongName> 2308301 - Disclosure - Debt (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DebtTables </Role> |
| | | <ShortName> Debt (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/Debt </ParentRole> |
| | | <Position> 39 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
| | | <LongName> 2309301 - Disclosure - Leases (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesTables </Role> |
| | | <ShortName> Leases (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/Leases </ParentRole> |
| | | <Position> 40 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
| | | <LongName> 2310301 - Disclosure - Financial Instruments (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/FinancialInstrumentsTables </Role> |
| | | <ShortName> Financial Instruments (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/FinancialInstruments </ParentRole> |
| | | <Position> 41 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 2311301 - Disclosure - Fair Value Measurements (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/FairValueMeasurementsTables </Role> |
| | | <ShortName> Fair Value Measurements (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/FairValueMeasurements </ParentRole> |
| | | <Position> 42 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R43.htm </HtmlFileName> |
| | | <LongName> 2312301 - Disclosure - Stockholders' Equity (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockholdersEquityTables </Role> |
| | | <ShortName> Stockholders' Equity (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockholdersEquity </ParentRole> |
| | | <Position> 43 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R44.htm </HtmlFileName> |
| | | <LongName> 2313301 - Disclosure - Stock-Based Compensation (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockBasedCompensationTables </Role> |
| | | <ShortName> Stock-Based Compensation (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockBasedCompensation </ParentRole> |
| | | <Position> 44 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R45.htm </HtmlFileName> |
| | | <LongName> 2314301 - Disclosure - Income Taxes (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/IncomeTaxesTables </Role> |
| | | <ShortName> Income Taxes (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/IncomeTaxes </ParentRole> |
| | | <Position> 45 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R46.htm </HtmlFileName> |
| | | <LongName> 2315301 - Disclosure - Pension and Other Postretirement Benefits (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefits </ParentRole> |
| | | <Position> 46 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R47.htm </HtmlFileName> |
| | | <LongName> 2316301 - Disclosure - Redeemable Noncontrolling Interest (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RedeemableNoncontrollingInterestTables </Role> |
| | | <ShortName> Redeemable Noncontrolling Interest (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RedeemableNoncontrollingInterest </ParentRole> |
| | | <Position> 47 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R48.htm </HtmlFileName> |
| | | <LongName> 2317301 - Disclosure - Segment and Revenue Information (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformationTables </Role> |
| | | <ShortName> Segment and Revenue Information (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SegmentAndRevenueInformation </ParentRole> |
| | | <Position> 48 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R49.htm </HtmlFileName> |
| | | <LongName> 2318301 - Disclosure - Discontinued Operations (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DiscontinuedOperationsTables </Role> |
| | | <ShortName> Discontinued Operations (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/DiscontinuedOperations </ParentRole> |
| | | <Position> 49 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R50.htm </HtmlFileName> |
| | | <LongName> 2319301 - Disclosure - Commitments and Contingencies (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/CommitmentsAndContingenciesTables </Role> |
| | | <ShortName> Commitments and Contingencies (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/CommitmentsAndContingencies </ParentRole> |
| | | <Position> 50 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R51.htm </HtmlFileName> |
| | | <LongName> 2323301 - Disclosure - Supplemental Financial Information (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SupplementalFinancialInformationTables </Role> |
| | | <ShortName> Supplemental Financial Information (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SupplementalFinancialInformation </ParentRole> |
| | | <Position> 51 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 2324301 - Disclosure - Quarterly Financial Data (Unaudited) (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/QuarterlyFinancialDataUnauditedTables </Role> |
| | | <ShortName> Quarterly Financial Data (Unaudited) (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/QuarterlyFinancialDataUnaudited </ParentRole> |
| | | <Position> 52 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R53.htm </HtmlFileName> |
| | | <LongName> 2401403 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNarrativeDetails </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 53 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R54.htm </HtmlFileName> |
| | | <LongName> 2401404 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Change in Reporting Entity) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesChangeInReportingEntityDetails </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies (Change in Reporting Entity) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 54 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R55.htm </HtmlFileName> |
| | | <LongName> 2401405 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Property and Equipment) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesPropertyAndEquipmentDetails </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies (Property and Equipment) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 55 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 2401406 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Unrecognized Revenues Under Contract) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesUnrecognizedRevenuesUnderContractDetails </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies (Unrecognized Revenues Under Contract) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 56 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 2401407 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Net Earnings (Loss) per Common Share) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesNetEarningsLossPerCommonShareDetails </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies (Net Earnings (Loss) per Common Share) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 57 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R58.htm </HtmlFileName> |
| | | <LongName> 2401408 - Disclosure - Basis of Presentation and Summary of Significant Accounting Policies (Recently Adopted Accounting Pronouncements Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesRecentlyAdoptedAccountingPronouncementsNarrativeDetails </Role> |
| | | <ShortName> Basis of Presentation and Summary of Significant Accounting Policies (Recently Adopted Accounting Pronouncements Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTables </ParentRole> |
| | | <Position> 58 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R59.htm </HtmlFileName> |
| | | <LongName> 2402402 - Disclosure - Property and Equipment (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PropertyAndEquipmentDetails </Role> |
| | | <ShortName> Property and Equipment (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PropertyAndEquipmentTables </ParentRole> |
| | | <Position> 59 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R60.htm </HtmlFileName> |
| | | <LongName> 2403402 - Disclosure - Programming and Other Inventory (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ProgrammingAndOtherInventoryDetails </Role> |
| | | <ShortName> Programming and Other Inventory (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/ProgrammingAndOtherInventoryTables </ParentRole> |
| | | <Position> 60 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R61.htm </HtmlFileName> |
| | | <LongName> 2404402 - Disclosure - Goodwill and Other Intangible Assets (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsNarrativeDetails </Role> |
| | | <ShortName> Goodwill and Other Intangible Assets (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsTables </ParentRole> |
| | | <Position> 61 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R62.htm </HtmlFileName> |
| | | <LongName> 2404403 - Disclosure - Goodwill and Other Intangible Assets (Goodwill) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsGoodwillDetails </Role> |
| | | <ShortName> Goodwill and Other Intangible Assets (Goodwill) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsTables </ParentRole> |
| | | <Position> 62 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R63.htm </HtmlFileName> |
| | | <LongName> 2404404 - Disclosure - Goodwill and Other Intangible Assets (Intangible Assets) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsIntangibleAssetsDetails </Role> |
| | | <ShortName> Goodwill and Other Intangible Assets (Intangible Assets) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsTables </ParentRole> |
| | | <Position> 63 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R64.htm </HtmlFileName> |
| | | <LongName> 2404405 - Disclosure - Goodwill and Other Intangible Assets (Amortization Expense) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsAmortizationExpenseDetails </Role> |
| | | <ShortName> Goodwill and Other Intangible Assets (Amortization Expense) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsTables </ParentRole> |
| | | <Position> 64 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R65.htm </HtmlFileName> |
| | | <LongName> 2404406 - Disclosure - Goodwill and Other Intangible Assets (Future Amortization Expense) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsFutureAmortizationExpenseDetails </Role> |
| | | <ShortName> Goodwill and Other Intangible Assets (Future Amortization Expense) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/GoodwillAndOtherIntangibleAssetsTables </ParentRole> |
| | | <Position> 65 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R66.htm </HtmlFileName> |
| | | <LongName> 2405402 - Disclosure - Restructuring, Programming Charges and Other Corporate Matters (Restructuring and Other Corporate Matters) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMattersRestructuringAndOtherCorporateMattersDetails </Role> |
| | | <ShortName> Restructuring, Programming Charges and Other Corporate Matters (Restructuring and Other Corporate Matters) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMattersTables </ParentRole> |
| | | <Position> 66 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R67.htm </HtmlFileName> |
| | | <LongName> 2405403 - Disclosure - Restructuring, Programming Charges and Other Corporate Matters (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMattersNarrativeDetails </Role> |
| | | <ShortName> Restructuring, Programming Charges and Other Corporate Matters (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMattersTables </ParentRole> |
| | | <Position> 67 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R68.htm </HtmlFileName> |
| | | <LongName> 2405404 - Disclosure - Restructuring, Programming Charges and Other Corporate Matters (Rollforward) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMattersRollforwardDetails </Role> |
| | | <ShortName> Restructuring, Programming Charges and Other Corporate Matters (Rollforward) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RestructuringProgrammingChargesAndOtherCorporateMattersTables </ParentRole> |
| | | <Position> 68 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R69.htm </HtmlFileName> |
| | | <LongName> 2406402 - Disclosure - Related Parties (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RelatedPartiesNarrativeDetails </Role> |
| | | <ShortName> Related Parties (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RelatedPartiesTables </ParentRole> |
| | | <Position> 69 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R70.htm </HtmlFileName> |
| | | <LongName> 2406403 - Disclosure - Related Parties (Schedule of Related Party Transactions) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RelatedPartiesScheduleOfRelatedPartyTransactionsDetails </Role> |
| | | <ShortName> Related Parties (Schedule of Related Party Transactions) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RelatedPartiesTables </ParentRole> |
| | | <Position> 70 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R71.htm </HtmlFileName> |
| | | <LongName> 2407402 - Disclosure - Acquisition and Investments (Acquisitions Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/AcquisitionAndInvestmentsAcquisitionsNarrativeDetails </Role> |
| | | <ShortName> Acquisition and Investments (Acquisitions Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/AcquisitionAndInvestmentsTables </ParentRole> |
| | | <Position> 71 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R72.htm </HtmlFileName> |
| | | <LongName> 2407403 - Disclosure - Acquisition and Investments (Acquisition Purchase Price Allocation) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/AcquisitionAndInvestmentsAcquisitionPurchasePriceAllocationDetails </Role> |
| | | <ShortName> Acquisition and Investments (Acquisition Purchase Price Allocation) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/AcquisitionAndInvestmentsTables </ParentRole> |
| | | <Position> 72 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R73.htm </HtmlFileName> |
| | | <LongName> 2407404 - Disclosure - Acquisition and Investments (Investments Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/AcquisitionAndInvestmentsInvestmentsNarrativeDetails </Role> |
| | | <ShortName> Acquisition and Investments (Investments Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/AcquisitionAndInvestmentsTables </ParentRole> |
| | | <Position> 73 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R74.htm </HtmlFileName> |
| | | <LongName> 2407405 - Disclosure - Acquisition and Investments (Variable Interest Entities Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/AcquisitionAndInvestmentsVariableInterestEntitiesNarrativeDetails </Role> |
| | | <ShortName> Acquisition and Investments (Variable Interest Entities Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/AcquisitionAndInvestmentsTables </ParentRole> |
| | | <Position> 74 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R75.htm </HtmlFileName> |
| | | <LongName> 2408402 - Disclosure - Debt (Schedule of Debt) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DebtScheduleOfDebtDetails </Role> |
| | | <ShortName> Debt (Schedule of Debt) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/DebtTables </ParentRole> |
| | | <Position> 75 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R76.htm </HtmlFileName> |
| | | <LongName> 2408403 - Disclosure - Debt (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DebtNarrativeDetails </Role> |
| | | <ShortName> Debt (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/DebtTables </ParentRole> |
| | | <Position> 76 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R77.htm </HtmlFileName> |
| | | <LongName> 2408404 - Disclosure - Debt (Maturities of Long-Term Debt) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DebtMaturitiesOfLongTermDebtDetails </Role> |
| | | <ShortName> Debt (Maturities of Long-Term Debt) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/DebtTables </ParentRole> |
| | | <Position> 77 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R78.htm </HtmlFileName> |
| | | <LongName> 2408405 - Disclosure - Debt (Commercial Paper Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DebtCommercialPaperNarrativeDetails </Role> |
| | | <ShortName> Debt (Commercial Paper Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/DebtTables </ParentRole> |
| | | <Position> 78 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R79.htm </HtmlFileName> |
| | | <LongName> 2408406 - Disclosure - Debt (Credit Facility Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DebtCreditFacilityNarrativeDetails </Role> |
| | | <ShortName> Debt (Credit Facility Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/DebtTables </ParentRole> |
| | | <Position> 79 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R80.htm </HtmlFileName> |
| | | <LongName> 2409402 - Disclosure - Leases (Balance Sheet Amounts) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesBalanceSheetAmountsDetails </Role> |
| | | <ShortName> Leases (Balance Sheet Amounts) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/LeasesTables </ParentRole> |
| | | <Position> 80 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R81.htm </HtmlFileName> |
| | | <LongName> 2409403 - Disclosure - Leases (Weighted Average) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesWeightedAverageDetails </Role> |
| | | <ShortName> Leases (Weighted Average) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/LeasesTables </ParentRole> |
| | | <Position> 81 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R82.htm </HtmlFileName> |
| | | <LongName> 2409404 - Disclosure - Leases (Lease Cost) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesLeaseCostDetails </Role> |
| | | <ShortName> Leases (Lease Cost) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/LeasesTables </ParentRole> |
| | | <Position> 82 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R83.htm </HtmlFileName> |
| | | <LongName> 2409405 - Disclosure - Leases (Operating and Financing Cash Flows) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesOperatingAndFinancingCashFlowsDetails </Role> |
| | | <ShortName> Leases (Operating and Financing Cash Flows) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/LeasesTables </ParentRole> |
| | | <Position> 83 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R84.htm </HtmlFileName> |
| | | <LongName> 2409406 - Disclosure - Leases (Future Minimum Payments) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesFutureMinimumPaymentsDetails </Role> |
| | | <ShortName> Leases (Future Minimum Payments) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/LeasesTables </ParentRole> |
| | | <Position> 84 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R85.htm </HtmlFileName> |
| | | <LongName> 2409407 - Disclosure - Leases (Future Minimum Payments Prior to Adoption) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesFutureMinimumPaymentsPriorToAdoptionDetails </Role> |
| | | <ShortName> Leases (Future Minimum Payments Prior to Adoption) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/LeasesTables </ParentRole> |
| | | <Position> 85 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R86.htm </HtmlFileName> |
| | | <LongName> 2409408 - Disclosure - Leases (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesNarrativeDetails </Role> |
| | | <ShortName> Leases (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/LeasesTables </ParentRole> |
| | | <Position> 86 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R87.htm </HtmlFileName> |
| | | <LongName> 2409409 - Disclosure - Leases (Future Lease Income as Lessor) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/LeasesFutureLeaseIncomeAsLessorDetails </Role> |
| | | <ShortName> Leases (Future Lease Income as Lessor) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/LeasesTables </ParentRole> |
| | | <Position> 87 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R88.htm </HtmlFileName> |
| | | <LongName> 2410402 - Disclosure - Financial Instruments (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/FinancialInstrumentsDetails </Role> |
| | | <ShortName> Financial Instruments (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/FinancialInstrumentsTables </ParentRole> |
| | | <Position> 88 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R89.htm </HtmlFileName> |
| | | <LongName> 2411402 - Disclosure - Fair Value Measurements (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/FairValueMeasurementsDetails </Role> |
| | | <ShortName> Fair Value Measurements (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/FairValueMeasurementsTables </ParentRole> |
| | | <Position> 89 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R90.htm </HtmlFileName> |
| | | <LongName> 2412402 - Disclosure - Stockholders' Equity (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockholdersEquityNarrativeDetails </Role> |
| | | <ShortName> Stockholders' Equity (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockholdersEquityTables </ParentRole> |
| | | <Position> 90 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R91.htm </HtmlFileName> |
| | | <LongName> 2412403 - Disclosure - Stockholders' Equity (Accumulated Other Comprehensive Income) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockholdersEquityAccumulatedOtherComprehensiveIncomeDetails </Role> |
| | | <ShortName> Stockholders' Equity (Accumulated Other Comprehensive Income) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockholdersEquityTables </ParentRole> |
| | | <Position> 91 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R92.htm </HtmlFileName> |
| | | <LongName> 2413402 - Disclosure - Stock-Based Compensation (Expense) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockBasedCompensationExpenseDetails </Role> |
| | | <ShortName> Stock-Based Compensation (Expense) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockBasedCompensationTables </ParentRole> |
| | | <Position> 92 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R93.htm </HtmlFileName> |
| | | <LongName> 2413403 - Disclosure - Stock-Based Compensation (RSUs and PSUs) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockBasedCompensationRsusAndPsusDetails </Role> |
| | | <ShortName> Stock-Based Compensation (RSUs and PSUs) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockBasedCompensationTables </ParentRole> |
| | | <Position> 93 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R94.htm </HtmlFileName> |
| | | <LongName> 2413404 - Disclosure - Stock-Based Compensation (Stock Options, Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockBasedCompensationStockOptionsNarrativeDetails </Role> |
| | | <ShortName> Stock-Based Compensation (Stock Options, Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockBasedCompensationTables </ParentRole> |
| | | <Position> 94 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R95.htm </HtmlFileName> |
| | | <LongName> 2413405 - Disclosure - Stock-Based Compensation (Stock Options, Black-Scholes Assumptions) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockBasedCompensationStockOptionsBlackScholesAssumptionsDetails </Role> |
| | | <ShortName> Stock-Based Compensation (Stock Options, Black-Scholes Assumptions) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockBasedCompensationTables </ParentRole> |
| | | <Position> 95 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R96.htm </HtmlFileName> |
| | | <LongName> 2413406 - Disclosure - Stock-Based Compensation (Stock-Options, Rollforward) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockBasedCompensationStockOptionsRollforwardDetails </Role> |
| | | <ShortName> Stock-Based Compensation (Stock-Options, Rollforward) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockBasedCompensationTables </ParentRole> |
| | | <Position> 96 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R97.htm </HtmlFileName> |
| | | <LongName> 2413407 - Disclosure - Stock-Based Compensation (Stock Options, Other Information) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/StockBasedCompensationStockOptionsOtherInformationDetails </Role> |
| | | <ShortName> Stock-Based Compensation (Stock Options, Other Information) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/StockBasedCompensationTables </ParentRole> |
| | | <Position> 97 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R98.htm </HtmlFileName> |
| | | <LongName> 2414402 - Disclosure - Income Taxes (Income (Loss) from Continuing Operations) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/IncomeTaxesIncomeLossFromContinuingOperationsDetails </Role> |
| | | <ShortName> Income Taxes (Income (Loss) from Continuing Operations) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/IncomeTaxesTables </ParentRole> |
| | | <Position> 98 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R99.htm </HtmlFileName> |
| | | <LongName> 2414403 - Disclosure - Income Taxes (Provision for Income Taxes) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/IncomeTaxesProvisionForIncomeTaxesDetails </Role> |
| | | <ShortName> Income Taxes (Provision for Income Taxes) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/IncomeTaxesTables </ParentRole> |
| | | <Position> 99 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R100.htm </HtmlFileName> |
| | | <LongName> 2414404 - Disclosure - Income Taxes (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/IncomeTaxesNarrativeDetails </Role> |
| | | <ShortName> Income Taxes (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/IncomeTaxesTables </ParentRole> |
| | | <Position> 100 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R101.htm </HtmlFileName> |
| | | <LongName> 2414405 - Disclosure - Income Taxes (Effective Income Tax Rate Reconciliation) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/IncomeTaxesEffectiveIncomeTaxRateReconciliationDetails </Role> |
| | | <ShortName> Income Taxes (Effective Income Tax Rate Reconciliation) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/IncomeTaxesTables </ParentRole> |
| | | <Position> 101 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R102.htm </HtmlFileName> |
| | | <LongName> 2414406 - Disclosure - Income Taxes (Deferred Income Tax Assets and Liabilities) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/IncomeTaxesDeferredIncomeTaxAssetsAndLiabilitiesDetails </Role> |
| | | <ShortName> Income Taxes (Deferred Income Tax Assets and Liabilities) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/IncomeTaxesTables </ParentRole> |
| | | <Position> 102 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R103.htm </HtmlFileName> |
| | | <LongName> 2414407 - Disclosure - Income Taxes (Unrecognized Tax Benefits) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/IncomeTaxesUnrecognizedTaxBenefitsDetails </Role> |
| | | <ShortName> Income Taxes (Unrecognized Tax Benefits) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/IncomeTaxesTables </ParentRole> |
| | | <Position> 103 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R104.htm </HtmlFileName> |
| | | <LongName> 2415402 - Disclosure - Pension and Other Postretirement Benefits (Change in Benefit Obligation) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsChangeInBenefitObligationDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Change in Benefit Obligation) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 104 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R105.htm </HtmlFileName> |
| | | <LongName> 2415403 - Disclosure - Pension and Other Postretirement Benefits (Change In Plan Assets) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsChangeInPlanAssetsDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Change In Plan Assets) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 105 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R106.htm </HtmlFileName> |
| | | <LongName> 2415404 - Disclosure - Pension and Other Postretirement Benefits (Funded Status of Pension and Postretirement Benefit Obligations) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsFundedStatusOfPensionAndPostretirementBenefitObligationsDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Funded Status of Pension and Postretirement Benefit Obligations) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 106 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R107.htm </HtmlFileName> |
| | | <LongName> 2415405 - Disclosure - Pension and Other Postretirement Benefits (Funded Status and Amounts Recognized in Accumulated Other Comprehensive Income (Loss) on the Consolidated Balance Sheets) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsFundedStatusAndAmountsRecognizedInAccumulatedOtherComprehensiveIncomeLossOnConsolidatedBalanceSheetsDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Funded Status and Amounts Recognized in Accumulated Other Comprehensive Income (Loss) on the Consolidated Balance Sheets) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 107 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R108.htm </HtmlFileName> |
| | | <LongName> 2415406 - Disclosure - Pension and Other Postretirement Benefits (Accumulated Benefit Obligation in Excess of Plan Assets) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsAccumulatedBenefitObligationInExcessOfPlanAssetsDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Accumulated Benefit Obligation in Excess of Plan Assets) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 108 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R109.htm </HtmlFileName> |
| | | <LongName> 2415407 - Disclosure - Pension and Other Postretirement Benefits (Components of Net Periodic Benefit Cost and Amounts Recognized in Other Comprehensive Income (Loss) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsComponentsOfNetPeriodicBenefitCostAndAmountsRecognizedInOtherComprehensiveIncomeLossDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Components of Net Periodic Benefit Cost and Amounts Recognized in Other Comprehensive Income (Loss) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 109 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R110.htm </HtmlFileName> |
| | | <LongName> 2415408 - Disclosure - Pension and Other Postretirement Benefits (Assumptions) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsAssumptionsDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Assumptions) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 110 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R111.htm </HtmlFileName> |
| | | <LongName> 2415409 - Disclosure - Pension and Other Postretirement Benefits (Sensitivity) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsSensitivityDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Sensitivity) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 111 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R112.htm </HtmlFileName> |
| | | <LongName> 2415410 - Disclosure - Pension and Other Postretirement Benefits (Plan Asset Allocations) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsPlanAssetAllocationsDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Plan Asset Allocations) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 112 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R113.htm </HtmlFileName> |
| | | <LongName> 2415411 - Disclosure - Pension and Other Postretirement Benefits (Fair Value Measurements) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsFairValueMeasurementsDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Fair Value Measurements) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 113 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R114.htm </HtmlFileName> |
| | | <LongName> 2415413 - Disclosure - Pension and Other Postretirement Benefits (Future Benefit Payments) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsFutureBenefitPaymentsDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Future Benefit Payments) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 114 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R115.htm </HtmlFileName> |
| | | <LongName> 2415414 - Disclosure - Pension and Other Postretirement Benefits (Multiemployer Pension and Postretirement Benefit Plans) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsMultiemployerPensionAndPostretirementBenefitPlansDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Multiemployer Pension and Postretirement Benefit Plans) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 115 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R116.htm </HtmlFileName> |
| | | <LongName> 2415415 - Disclosure - Pension and Other Postretirement Benefits (Defined Contribution Plans) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsDefinedContributionPlansDetails </Role> |
| | | <ShortName> Pension and Other Postretirement Benefits (Defined Contribution Plans) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/PensionAndOtherPostretirementBenefitsTables </ParentRole> |
| | | <Position> 116 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R117.htm </HtmlFileName> |
| | | <LongName> 2416402 - Disclosure - Redeemable Noncontrolling Interest (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/RedeemableNoncontrollingInterestDetails </Role> |
| | | <ShortName> Redeemable Noncontrolling Interest (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/RedeemableNoncontrollingInterestTables </ParentRole> |
| | | <Position> 117 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R118.htm </HtmlFileName> |
| | | <LongName> 2417402 - Disclosure - Segment and Revenue Information (Revenues) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformationRevenuesDetails </Role> |
| | | <ShortName> Segment and Revenue Information (Revenues) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SegmentAndRevenueInformationTables </ParentRole> |
| | | <Position> 118 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R119.htm </HtmlFileName> |
| | | <LongName> 2417403 - Disclosure - Segment and Revenue Information (Operating Income (Loss)) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformationOperatingIncomeLossDetails </Role> |
| | | <ShortName> Segment and Revenue Information (Operating Income (Loss)) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SegmentAndRevenueInformationTables </ParentRole> |
| | | <Position> 119 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R120.htm </HtmlFileName> |
| | | <LongName> 2417404 - Disclosure - Segment and Revenue Information (Depreciation and Amortization) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformationDepreciationAndAmortizationDetails </Role> |
| | | <ShortName> Segment and Revenue Information (Depreciation and Amortization) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SegmentAndRevenueInformationTables </ParentRole> |
| | | <Position> 120 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R121.htm </HtmlFileName> |
| | | <LongName> 2417405 - Disclosure - Segment and Revenue Information (Capital Expenditures) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformationCapitalExpendituresDetails </Role> |
| | | <ShortName> Segment and Revenue Information (Capital Expenditures) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SegmentAndRevenueInformationTables </ParentRole> |
| | | <Position> 121 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R122.htm </HtmlFileName> |
| | | <LongName> 2417406 - Disclosure - Segment and Revenue Information (Assets) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformationAssetsDetails </Role> |
| | | <ShortName> Segment and Revenue Information (Assets) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SegmentAndRevenueInformationTables </ParentRole> |
| | | <Position> 122 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R123.htm </HtmlFileName> |
| | | <LongName> 2417407 - Disclosure - Segment and Revenue Information (Revenue by Type) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformationRevenueByTypeDetails </Role> |
| | | <ShortName> Segment and Revenue Information (Revenue by Type) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SegmentAndRevenueInformationTables </ParentRole> |
| | | <Position> 123 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R124.htm </HtmlFileName> |
| | | <LongName> 2417408 - Disclosure - Segment and Revenue Information (Long-lived Assets) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SegmentAndRevenueInformationLongLivedAssetsDetails </Role> |
| | | <ShortName> Segment and Revenue Information (Long-lived Assets) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SegmentAndRevenueInformationTables </ParentRole> |
| | | <Position> 124 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R125.htm </HtmlFileName> |
| | | <LongName> 2418402 - Disclosure - Discontinued Operations (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DiscontinuedOperationsNarrativeDetails </Role> |
| | | <ShortName> Discontinued Operations (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/DiscontinuedOperationsTables </ParentRole> |
| | | <Position> 125 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R126.htm </HtmlFileName> |
| | | <LongName> 2418403 - Disclosure - Discontinued Operations (Net Earnings (Loss)) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/DiscontinuedOperationsNetEarningsLossDetails </Role> |
| | | <ShortName> Discontinued Operations (Net Earnings (Loss)) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/DiscontinuedOperationsTables </ParentRole> |
| | | <Position> 126 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R127.htm </HtmlFileName> |
| | | <LongName> 2419402 - Disclosure - Commitments and Contingencies (Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/CommitmentsAndContingenciesNarrativeDetails </Role> |
| | | <ShortName> Commitments and Contingencies (Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/CommitmentsAndContingenciesTables </ParentRole> |
| | | <Position> 127 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R128.htm </HtmlFileName> |
| | | <LongName> 2419403 - Disclosure - Commitments and Contingencies (Commitments) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/CommitmentsAndContingenciesCommitmentsDetails </Role> |
| | | <ShortName> Commitments and Contingencies (Commitments) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/CommitmentsAndContingenciesTables </ParentRole> |
| | | <Position> 128 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R129.htm </HtmlFileName> |
| | | <LongName> 2419404 - Disclosure - Commitments and Contingencies (Legal Matters Narrative) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/CommitmentsAndContingenciesLegalMattersNarrativeDetails </Role> |
| | | <ShortName> Commitments and Contingencies (Legal Matters Narrative) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/CommitmentsAndContingenciesTables </ParentRole> |
| | | <Position> 129 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R130.htm </HtmlFileName> |
| | | <LongName> 2423402 - Disclosure - Supplemental Financial Information (Components of Other Items, Net) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SupplementalFinancialInformationComponentsOfOtherItemsNetDetails </Role> |
| | | <ShortName> Supplemental Financial Information (Components of Other Items, Net) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SupplementalFinancialInformationTables </ParentRole> |
| | | <Position> 130 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R131.htm </HtmlFileName> |
| | | <LongName> 2423403 - Disclosure - Supplemental Financial Information (Supplemental Cash Flow Information) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/SupplementalFinancialInformationSupplementalCashFlowInformationDetails </Role> |
| | | <ShortName> Supplemental Financial Information (Supplemental Cash Flow Information) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/SupplementalFinancialInformationTables </ParentRole> |
| | | <Position> 131 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R132.htm </HtmlFileName> |
| | | <LongName> 2424402 - Disclosure - Quarterly Financial Data (Unaudited) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/QuarterlyFinancialDataUnauditedDetails </Role> |
| | | <ShortName> Quarterly Financial Data (Unaudited) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/QuarterlyFinancialDataUnauditedTables </ParentRole> |
| | | <Position> 132 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R133.htm </HtmlFileName> |
| | | <LongName> 2425401 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.viacbs.com/role/ScheduleIiValuationAndQualifyingAccountsDetails </Role> |
| | | <ShortName> Schedule II - Valuation and Qualifying Accounts (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.viacbs.com/role/ScheduleIiValuationAndQualifyingAccounts </ParentRole> |
| | | <Position> 133 </Position> |
| | | </Report> |
| | <Report instance="a2019k.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9999.htm </HtmlFileName> |
| | | <LongName> Uncategorized Items - a2019k.htm </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://xbrl.sec.gov/role/uncategorizedFacts </Role> |
| | | <ShortName> Uncategorized Items - a2019k.htm </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 134 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File doctype="10-K" original="a2019k.htm"> a2019k.htm </File> |
| | <File> a2019q4ex31a-302.htm </File> |
| | <File> a2019q4ex31b-302.htm </File> |
| | <File> a2019q4ex32a-906.htm </File> |
| | <File> a2019q4ex32b-906.htm </File> |
| | <File> a2019q4viacex10bb.htm </File> |
| | <File> a2019q4viacex10cc.htm </File> |
| | <File> a2019q4viacex10gg.htm </File> |
| | <File> a2019q4viacex10hh.htm </File> |
| | <File> a2019q4viacex10jj.htm </File> |
| | <File> a2019q4viacex23a-conse.htm </File> |
| | <File> a2019q4viacex4a.htm </File> |
| | <File> a2019viacex21-subsidia.htm </File> |
| | <File> a2019viacex24-poas.htm </File> |
| | <File> viac-20191231.xsd </File> |
| | <File> viac-20191231_cal.xml </File> |
| | <File> viac-20191231_def.xml </File> |
| | <File> viac-20191231_lab.xml </File> |
| | <File> viac-20191231_pre.xml </File> |
| | </InputFiles> |
| <SupplementalFiles> |
| | <File> bet.jpg </File> |
| | <File> cbsallaccess.jpg </File> |
| | <File> cbscares.jpg </File> |
| | <File> cbsinteractive.jpg </File> |
| | <File> cbslogoa02.jpg </File> |
| | <File> cbssportsnetwork.jpg </File> |
| | <File> cbstelevisiondistribution.jpg </File> |
| | <File> cbstelevisionstations.jpg </File> |
| | <File> cbstelevisionstudios.jpg </File> |
| | <File> channel5.jpg </File> |
| | <File> chart-c378fcdfc52750e5db4.jpg </File> |
| | <File> cmt.jpg </File> |
| | <File> colors.jpg </File> |
| | <File> comedycentral.jpg </File> |
| | <File> getschooled.jpg </File> |
| | <File> kindergartentocapandgown.jpg </File> |
| | <File> mtv.jpg </File> |
| | <File> network10.jpg </File> |
| | <File> nickelodeon.jpg </File> |
| | <File> nickjrbeyondthebackpack.jpg </File> |
| | <File> paramountanimation.jpg </File> |
| | <File> paramountnetwork.jpg </File> |
| | <File> paramountpictures.jpg </File> |
| | <File> paramountplayers.jpg </File> |
| | <File> paramountplus.jpg </File> |
| | <File> paramounttelevision2019k1.jpg </File> |
| | <File> plutotv.jpg </File> |
| | <File> poptva01.jpg </File> |
| | <File> showtimenetworks.jpg </File> |
| | <File> simonandschusterhorizontala0.jpg </File> |
| | <File> smithsonianchannela01.jpg </File> |
| | <File> stayingalive.jpg </File> |
| | <File> takeaction.jpg </File> |
| | <File> telefe.jpg </File> |
| | <File> tvland.jpg </File> |
| | <File> veteransnetwork.jpg </File> |
| | <File> vh1.jpg </File> |
| | <File> vh1savethemusicfoundation.jpg </File> |
| | </SupplementalFiles> |
| <BaseTaxonomies> |
| | <BaseTaxonomy> http://xbrl.sec.gov/country/2017-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://fasb.org/us-gaap/2019-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://xbrl.sec.gov/dei/2019-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://fasb.org/srt/2019-01-31 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |