$CMCSA
COMCAST CORP Stock $cmcsa

$cmcsa Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000116669122000009 Filed on February 02, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$30.34B	$116.4B	$27.71B
YoY Change	9.48%	12.38%	-2.43%
Cost Of Revenue	$9.880B	$38.45B	$9.438B
YoY Change	4.68%	16.09%	1.48%
Gross Profit	$20.46B	$77.94B	$18.27B
YoY Change	11.96%	10.64%	-4.34%
Gross Profit Margin	67.43%	66.96%	65.94%
Selling, General & Admin	$12.05B	$43.23B	$11.08B
YoY Change	8.67%	8.63%	3.96%
% of Gross Profit	58.88%	55.47%	60.67%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.582B	$13.80B	$3.252B
YoY Change	10.15%	5.37%	2.36%
% of Gross Profit	17.51%	17.71%	17.8%
Operating Expenses	$15.63B	$57.03B	$14.34B
YoY Change	9.01%	7.82%	3.59%
Operating Profit	$4.829B	$20.82B	$3.918B
YoY Change	23.25%	19.0%	-25.33%
Interest Expense	-$1.002B	$4.281B	$426.0M
YoY Change	-335.21%	-6.69%	-134.11%
% of Operating Profit	-20.75%	20.56%	10.87%
Other Income/Expense, Net	$66.00M	$2.557B	$72.00M
YoY Change	-8.33%	120.43%	14.29%
Pretax Income	$3.885B	$19.09B	$4.416B
YoY Change	-12.02%	35.75%	8.74%
Income Tax	$905.0M	$5.259B	$979.0M
% Of Pretax Income	23.29%	27.54%	22.17%
Net Earnings	$3.056B	$14.16B	$3.380B
YoY Change	-9.59%	34.41%	6.89%
Net Earnings / Revenue	10.07%	12.17%	12.2%
Basic Earnings Per Share		$3.09	$0.74
Diluted Earnings Per Share	$662.6K	$3.04	$0.73
COMMON SHARES
Basic Shares Outstanding		4.584B shares
Diluted Shares Outstanding		4.654B shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$8.711B	$8.711B	$11.74B
YoY Change	-25.8%	-25.8%	113.45%
Cash & Equivalents	$8.711B	$8.711B	$11.74B
Short-Term Investments
Other Short-Term Assets	$4.088B	$4.088B	$3.535B
YoY Change	15.64%	15.64%	-25.15%
Inventory
Prepaid Expenses
Receivables	$12.01B	$12.01B	$11.47B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$24.81B	$24.81B	$26.74B
YoY Change	-7.23%	-7.23%	5.31%
LONG-TERM ASSETS
Property, Plant & Equipment	$54.05B	$60.51B	$52.00B
YoY Change	3.95%	8.49%	7.6%
Goodwill	$70.19B		$70.67B
YoY Change	-0.68%		2.83%
Intangibles
YoY Change
Long-Term Investments	$6.111B	$8.687B	$6.006B
YoY Change	1.75%	5.08%	12.32%
Other Assets	$12.42B	$4.325B	$8.103B
YoY Change	53.33%	33.98%	-8.61%
Total Long-Term Assets	$251.1B	$251.1B	$247.1B
YoY Change	1.61%	1.61%	3.83%
TOTAL ASSETS
Total Short-Term Assets	$24.81B	$24.81B	$26.74B
Total Long-Term Assets	$251.1B	$251.1B	$247.1B
Total Assets	$275.9B	$275.9B	$273.9B
YoY Change	0.74%	0.74%	3.97%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$12.46B	$12.46B	$11.36B
YoY Change	9.6%	9.6%	4.97%
Accrued Expenses	$9.899B	$11.72B	$9.617B
YoY Change	2.93%	3.51%	-8.55%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$2.132B	$2.132B	$3.146B
YoY Change	-32.23%	-32.23%	-29.34%
Total Short-Term Liabilities	$29.35B	$29.35B	$28.80B
YoY Change	1.92%	1.92%	-4.94%
LONG-TERM LIABILITIES
Long-Term Debt	$97.89B	$97.89B	$105.8B
YoY Change	-7.46%	-7.46%	2.77%
Other Long-Term Liabilities	$20.62B	$20.62B	$18.22B
YoY Change	13.16%	13.15%	8.69%
Total Long-Term Liabilities	$20.62B	$118.5B	$18.22B
YoY Change	13.16%	-4.43%	8.69%
TOTAL LIABILITIES
Total Short-Term Liabilities	$29.35B	$29.35B	$28.80B
Total Long-Term Liabilities	$20.62B	$118.5B	$18.22B
Total Liabilities	$49.97B	$179.8B	$47.02B
YoY Change	6.27%	-2.03%	-0.08%
SHAREHOLDERS EQUITY
Retained Earnings	$61.90B		$56.44B
YoY Change	9.68%		11.33%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$7.517B		$7.517B
YoY Change	0.0%		0.0%
Treasury Stock Shares	872.8M shares		872.8M shares
Shareholders Equity	$96.09B	$96.09B	$90.32B
YoY Change
Total Liabilities & Shareholders Equity	$275.9B	$275.9B	$273.9B
YoY Change	0.74%	0.74%	3.97%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$3.056B	$14.16B	$3.380B
YoY Change	-9.59%	34.41%	6.89%
Depreciation, Depletion And Amortization	$3.582B	$13.80B	$3.252B
YoY Change	10.15%	5.37%	2.36%
Cash From Operating Activities	$7.689B	$29.15B	$5.042B
YoY Change	52.5%	17.82%	-19.13%
INVESTING ACTIVITIES
Capital Expenditures	-$3.905B	$9.174B	-$3.519B
YoY Change	10.97%	-0.05%	-9.21%
Acquisitions		$1.374B
YoY Change		489.7%
Other Investing Activities	-$1.135B	-$451.0M	-$555.0M
YoY Change	104.5%	80.4%	947.17%
Cash From Investing Activities	-$5.040B	-$13.45B	-$4.074B
YoY Change	23.71%	11.61%	3.69%
FINANCING ACTIVITIES
Cash Dividend Paid		$4.532B
YoY Change		9.47%
Common Stock Issuance & Retirement, Net		$4.672B
YoY Change		774.91%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-5.672B	-$18.62B	-2.922B
YoY Change	94.11%	185.86%	723.1%
NET CHANGE
Cash From Operating Activities	7.689B	$29.15B	5.042B
Cash From Investing Activities	-5.040B	-$13.45B	-4.074B
Cash From Financing Activities	-5.672B	-$18.62B	-2.922B
Net Change In Cash	-3.023B	-$2.989B	-1.954B
YoY Change	54.71%	-148.37%	-200.15%
FREE CASH FLOW
Cash From Operating Activities	$7.689B	$29.15B	$5.042B
Capital Expenditures	-$3.905B	$9.174B	-$3.519B
Free Cash Flow	$11.59B	$19.97B	$8.561B
YoY Change	35.43%	28.37%	-15.33%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001166691
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssetsNoncurrent
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherAssetsNoncurrent
CY2020Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccruedLiabilitiesCurrent
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccruedLiabilitiesCurrent
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilitiesNoncurrent
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-32871
CY2021	dei	Entity Registrant Name EntityRegistrantName	COMCAST CORPORATION
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	27-0000798
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Comcast Center
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Philadelphia
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	19103-2838
CY2021	dei	City Area Code CityAreaCode	215
CY2021	dei	Local Phone Number LocalPhoneNumber	286-1700
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	259633000000	USD
CY2021	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2021	dei	Auditor Location AuditorLocation	Philadelphia, Pennsylvania
CY2021	us-gaap	Revenues Revenues	116385000000	USD
CY2020	us-gaap	Revenues Revenues	103564000000	USD
CY2019	us-gaap	Revenues Revenues	108942000000	USD
CY2021	cmcsa	Programming And Production Costs ProgrammingAndProductionCosts	38450000000	USD
CY2020	cmcsa	Programming And Production Costs ProgrammingAndProductionCosts	33121000000	USD
CY2019	cmcsa	Programming And Production Costs ProgrammingAndProductionCosts	34440000000	USD
CY2021	cmcsa	Other Operating And Administrative OtherOperatingAndAdministrative	35619000000	USD
CY2020	cmcsa	Other Operating And Administrative OtherOperatingAndAdministrative	33109000000	USD
CY2019	cmcsa	Other Operating And Administrative OtherOperatingAndAdministrative	32807000000	USD
CY2021	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	7695000000	USD
CY2020	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	6741000000	USD
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CY2021	us-gaap	Costs And Expenses CostsAndExpenses	95568000000	USD
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	86071000000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	87817000000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	20817000000	USD
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CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	21125000000	USD
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CY2020	us-gaap	Interest Expense InterestExpense	4588000000	USD
CY2019	us-gaap	Interest Expense InterestExpense	4567000000	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	2557000000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	1160000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	438000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	19093000000	USD
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CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5259000000	USD
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CY2020	us-gaap	Profit Loss ProfitLoss	10701000000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	13323000000	USD
CY2021	cmcsa	Net Income Loss Attributable To Noncontrolling Interests And Redeemable Subsidiary Preferred Stock NetIncomeLossAttributableToNoncontrollingInterestsAndRedeemableSubsidiaryPreferredStock	-325000000	USD
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CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	13436000000	USD
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CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-347000000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-382000000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-1096000000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1227000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	29146000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	24737000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	25697000000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9174000000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9179000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9953000000	USD
CY2021	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2883000000	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2455000000	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2475000000	USD
CY2021	cmcsa	Payments For Construction Of Theme Park PaymentsForConstructionOfThemePark	976000000	USD
CY2020	cmcsa	Payments For Construction Of Theme Park PaymentsForConstructionOfThemePark	1498000000	USD
CY2019	cmcsa	Payments For Construction Of Theme Park PaymentsForConstructionOfThemePark	1116000000	USD
CY2021	cmcsa	Payments To Acquire Intangible Assets Spectrum Rights PaymentsToAcquireIntangibleAssetsSpectrumRights	0	USD
CY2020	cmcsa	Payments To Acquire Intangible Assets Spectrum Rights PaymentsToAcquireIntangibleAssetsSpectrumRights	459000000	USD
CY2019	cmcsa	Payments To Acquire Intangible Assets Spectrum Rights PaymentsToAcquireIntangibleAssetsSpectrumRights	0	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1374000000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	233000000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	370000000	USD
CY2021	cmcsa	Proceeds From Sales Of Businesses And Investments ProceedsFromSalesOfBusinessesAndInvestments	684000000	USD
CY2020	cmcsa	Proceeds From Sales Of Businesses And Investments ProceedsFromSalesOfBusinessesAndInvestments	2339000000	USD
CY2019	cmcsa	Proceeds From Sales Of Businesses And Investments ProceedsFromSalesOfBusinessesAndInvestments	886000000	USD
CY2021	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	174000000	USD
CY2020	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	812000000	USD
CY2019	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1899000000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-451000000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-250000000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-86000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-13446000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-12047000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-14841000000	USD
CY2021	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
CY2020	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	0	USD
CY2019	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-1288000000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	2628000000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	18644000000	USD
CY2020Q4	cmcsa	Film Monetized On Its Own Capitalized Cost And Entertainment License Agreement For Program Material Including Sports Rights Advances FilmMonetizedOnItsOwnCapitalizedCostAndEntertainmentLicenseAgreementForProgramMaterialIncludingSportsRightsAdvances	13340000000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	4672000000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	534000000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	504000000	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	4532000000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	5479000000	USD
CY2021	cmcsa	Proceeds From Collateralized Obligation ProceedsFromCollateralizedObligation	0	USD
CY2020	cmcsa	Proceeds From Collateralized Obligation ProceedsFromCollateralizedObligation	0	USD
CY2019	cmcsa	Proceeds From Collateralized Obligation ProceedsFromCollateralizedObligation	5175000000	USD
CY2021	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	11498000000	USD
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	18777000000	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	14354000000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	4140000000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	3735000000	USD
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-544000000	USD
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1706000000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	46000000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-18618000000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-6513000000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-9181000000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-71000000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	2000000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5000000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2989000000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	6179000000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1680000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11768000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5589000000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3909000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8778000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11768000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5589000000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8711000000	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	24807000000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	26741000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	11740000000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	12008000000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	11466000000	USD
CY2021Q4	us-gaap	Other Assets Current OtherAssetsCurrent	4088000000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	3535000000	USD
CY2021Q4	cmcsa	Film Monetized On Its Own And Entertainment License Agreement For Program Material Including Sports Rights Advances Capitalized Costs Noncurrent FilmMonetizedOnItsOwnAndEntertainmentLicenseAgreementForProgramMaterialIncludingSportsRightsAdvancesCapitalizedCostsNoncurrent	12806000000	USD
CY2020Q4	cmcsa	Film Monetized On Its Own And Entertainment License Agreement For Program Material Including Sports Rights Advances Capitalized Costs Noncurrent FilmMonetizedOnItsOwnAndEntertainmentLicenseAgreementForProgramMaterialIncludingSportsRightsAdvancesCapitalizedCostsNoncurrent	13340000000	USD
CY2021Q4	us-gaap	Long Term Investments LongTermInvestments	8082000000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	7820000000	USD
CY2021Q4	cmcsa	Investment Securing Collateralized Obligation InvestmentSecuringCollateralizedObligation	605000000	USD
CY2020Q4	cmcsa	Investment Securing Collateralized Obligation InvestmentSecuringCollateralizedObligation	447000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	54047000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	51995000000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	70189000000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	8103000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	70669000000	USD
CY2021Q4	us-gaap	Indefinite Lived Franchise Rights IndefiniteLivedFranchiseRights	59365000000	USD
CY2020Q4	us-gaap	Indefinite Lived Franchise Rights IndefiniteLivedFranchiseRights	59365000000	USD
CY2021Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	33580000000	USD
CY2020Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	35389000000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	12424000000	USD
CY2021Q4	us-gaap	Assets Assets	275905000000	USD
CY2020Q4	us-gaap	Assets Assets	273869000000	USD
CY2021Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	12455000000	USD
CY2020Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	11364000000	USD
CY2021Q4	cmcsa	Accrued Participations And Residuals Current AccruedParticipationsAndResidualsCurrent	1822000000	USD
CY2020Q4	cmcsa	Accrued Participations And Residuals Current AccruedParticipationsAndResidualsCurrent	1706000000	USD
CY2021Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	3040000000	USD
CY2020Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	2963000000	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	9899000000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	9617000000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	2132000000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	3146000000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	29348000000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	28796000000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	92718000000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	100614000000	USD
CY2021Q4	cmcsa	Collateralized Obligation CollateralizedObligation	5170000000	USD
CY2020Q4	cmcsa	Collateralized Obligation CollateralizedObligation	5168000000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	30041000000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	28051000000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	20620000000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	18222000000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	519000000	USD
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	1280000000	USD
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2021Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	40173000000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	39464000000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	61902000000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	56438000000	USD
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	872791028	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	872791028	shares
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	7517000000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	7517000000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1480000000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1884000000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	96092000000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	90323000000	USD
CY2021Q4	us-gaap	Minority Interest MinorityInterest	1398000000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	1415000000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	97490000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	91738000000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	275905000000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	273869000000	USD
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	97490000000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	91738000000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	83874000000	USD
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.00
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.92
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.84
CY2019	cmcsa	Adjusted Ebitda AdjustedEBITDA	34258000000	USD
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	Reclassifications have been made to our notes to consolidated financial statements for the prior year period to conform to classifications used in 2021. See Note 2 for a discussion of the changes in our presentation of segment operating results.
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-bottom:6pt;text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Our consolidated financial statements are prepared in accordance with GAAP, which require us to select accounting policies, including in certain cases industry-specific policies, and make estimates that affect the reported amount of assets, liabilities, revenue and expenses, and the related disclosure of contingent assets and contingent liabilities. Actual results could differ from these estimates. The following accounting policies are specific to the industries in which we operate:</span></div><div style="margin-bottom:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">capitalization and amortization of film and television costs (see Note 4)</span></div><div style="margin-bottom:6pt;padding-left:36pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">•</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;padding-left:14.5pt">costs for connecting customers to our cable systems (see Note 9)</span></div>
CY2021	us-gaap	Revenues Revenues	116385000000	USD
CY2021	cmcsa	Adjusted Ebitda AdjustedEBITDA	34708000000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	13804000000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9174000000	USD
CY2021	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2883000000	USD
CY2020	us-gaap	Revenues Revenues	103564000000	USD
CY2020	cmcsa	Adjusted Ebitda AdjustedEBITDA	30826000000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	13100000000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9179000000	USD
CY2020	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2455000000	USD
CY2019	us-gaap	Revenues Revenues	108942000000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	12953000000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9953000000	USD
CY2019	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2475000000	USD
CY2021	cmcsa	Adjusted Ebitda AdjustedEBITDA	34708000000	USD
CY2020	cmcsa	Adjusted Ebitda AdjustedEBITDA	30826000000	USD
CY2019	cmcsa	Adjusted Ebitda AdjustedEBITDA	34258000000	USD
CY2021	cmcsa	Adjustments For Items Excluded From Adjusted Ebitda AdjustmentsForItemsExcludedFromAdjustedEBITDA	87000000	USD
CY2020	cmcsa	Adjustments For Items Excluded From Adjusted Ebitda AdjustmentsForItemsExcludedFromAdjustedEBITDA	233000000	USD
CY2019	cmcsa	Adjustments For Items Excluded From Adjusted Ebitda AdjustmentsForItemsExcludedFromAdjustedEBITDA	180000000	USD
CY2021	us-gaap	Depreciation Depreciation	8628000000	USD
CY2020	us-gaap	Depreciation Depreciation	8320000000	USD
CY2019	us-gaap	Depreciation Depreciation	8663000000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5176000000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4780000000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4290000000	USD
CY2021	us-gaap	Interest Expense InterestExpense	4281000000	USD
CY2020	us-gaap	Interest Expense InterestExpense	4588000000	USD
CY2019	us-gaap	Interest Expense InterestExpense	4567000000	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	2557000000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	1160000000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	438000000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	19093000000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	14065000000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	16996000000	USD
CY2021	us-gaap	Revenues Revenues	116385000000	USD
CY2020	us-gaap	Revenues Revenues	103564000000	USD
CY2019	us-gaap	Revenues Revenues	108942000000	USD
CY2021	us-gaap	Revenues Revenues	116385000000	USD
CY2020	us-gaap	Revenues Revenues	103564000000	USD
CY2019	us-gaap	Revenues Revenues	108942000000	USD
CY2021Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	12666000000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	12273000000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	658000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	807000000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	12008000000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	11466000000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Noncurrent AccountsReceivableNetNoncurrent	1091000000	USD
CY2021Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	1094000000	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	1060000000	USD
CY2021	us-gaap	Film Monetized On Its Own Amortization Expense FilmMonetizedOnItsOwnAmortizationExpense	7300000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	807000000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	419000000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	352000000	USD
CY2021	cmcsa	Accounts Receivable Allowance For Credit Loss Additions Charged To Costs And Expenses And Other Accounts AccountsReceivableAllowanceForCreditLossAdditionsChargedToCostsAndExpensesAndOtherAccounts	316000000	USD
CY2020	cmcsa	Accounts Receivable Allowance For Credit Loss Additions Charged To Costs And Expenses And Other Accounts AccountsReceivableAllowanceForCreditLossAdditionsChargedToCostsAndExpensesAndOtherAccounts	912000000	USD
CY2019	cmcsa	Accounts Receivable Allowance For Credit Loss Additions Charged To Costs And Expenses And Other Accounts AccountsReceivableAllowanceForCreditLossAdditionsChargedToCostsAndExpensesAndOtherAccounts	769000000	USD
CY2021	cmcsa	Accounts Receivable Allowance For Credit Loss Deductions From Reserves AccountsReceivableAllowanceForCreditLossDeductionsFromReserves	465000000	USD
CY2020	cmcsa	Accounts Receivable Allowance For Credit Loss Deductions From Reserves AccountsReceivableAllowanceForCreditLossDeductionsFromReserves	524000000	USD
CY2019	cmcsa	Accounts Receivable Allowance For Credit Loss Deductions From Reserves AccountsReceivableAllowanceForCreditLossDeductionsFromReserves	702000000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	658000000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	807000000	USD
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CY2021Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	1735000000	USD
CY2020Q4	us-gaap	Equity Securities Without Readily Determinable Fair Value Amount EquitySecuritiesWithoutReadilyDeterminableFairValueAmount	1950000000	USD
CY2021Q4	us-gaap	Other Investments OtherInvestments	803000000	USD
CY2020Q4	us-gaap	Other Investments OtherInvestments	143000000	USD
CY2021Q4	us-gaap	Investments Investments	9055000000	USD
CY2020Q4	us-gaap	Investments Investments	8559000000	USD
CY2021Q4	us-gaap	Short Term Investments ShortTermInvestments	368000000	USD
CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	292000000	USD
CY2021Q4	cmcsa	Investment Securing Collateralized Obligation InvestmentSecuringCollateralizedObligation	605000000	USD
CY2020Q4	cmcsa	Investment Securing Collateralized Obligation InvestmentSecuringCollateralizedObligation	447000000	USD
CY2021Q4	us-gaap	Long Term Investments LongTermInvestments	8082000000	USD
CY2020Q4	us-gaap	Long Term Investments LongTermInvestments	7820000000	USD
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	66000000	USD
CY2019	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	215000000	USD
CY2019Q3	cmcsa	Proceeds From Collateralized Obligation ProceedsFromCollateralizedObligation	5200000000	USD
CY2021Q4	cmcsa	Collateralized Obligation CollateralizedObligation	5200000000	USD
CY2020Q2	cmcsa	Payments For Repurchase And Redemption Of Subsidiary Preferred Stock PaymentsForRepurchaseAndRedemptionOfSubsidiaryPreferredStock	1800000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	109658000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	106383000000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	55611000000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	54388000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	54047000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	51995000000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	54047000000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	51995000000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	68725000000	USD
CY2020	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	149000000	USD
CY2020	cmcsa	Goodwill Foreign Currency Translation Gain Loss And Other GoodwillForeignCurrencyTranslationGainLossAndOther	1795000000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	70669000000	USD
CY2021	us-gaap	Goodwill Transfers GoodwillTransfers	0	USD
CY2021	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	979000000	USD
CY2021	cmcsa	Goodwill Foreign Currency Translation Gain Loss And Other GoodwillForeignCurrencyTranslationGainLossAndOther	-1459000000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	70189000000	USD
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	116491000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	23545000000	USD
CY2020Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	114579000000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	19825000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	5140000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	4513000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	3737000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2996000000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	2403000000	USD
CY2021Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	549000000	USD
CY2020Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	481000000	USD
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	595000000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	599000000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	573000000	USD
CY2021	cmcsa	Number Of Votes Entitled Of Each Class B Common Stock NumberOfVotesEntitledOfEachClassBCommonStock	15	vote
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4584000000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4574000000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	4548000000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	70000000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	50000000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	62000000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4654000000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4624000000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	4610000000	shares
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	1119000000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	1790000000	USD
CY2021Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	104000000	USD
CY2020Q4	us-gaap	Aoci Loss Cash Flow Hedge Cumulative Gain Loss After Tax AociLossCashFlowHedgeCumulativeGainLossAfterTax	-109000000	USD
CY2021Q4	cmcsa	Accumulated Other Comprehensive Income Loss Defined Benefit Plan And Other After Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanAndOtherAfterTax	-257000000	USD
CY2020Q4	cmcsa	Accumulated Other Comprehensive Income Loss Defined Benefit Plan And Other After Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPlanAndOtherAfterTax	-203000000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1480000000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1884000000	USD
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1081000000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	960000000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	825000000	USD
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P5Y
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	44000000	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	54.22
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	211000000	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	40.38
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	9.72
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	6.61
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.91
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.018
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.022
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.021
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.228
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.210
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.220
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.009
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.010
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.025
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y10M24D
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	209000000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	150000000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	196000000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	3908000000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	3878000000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	4254000000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2628000000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3183000000	USD
CY2019	cmcsa	Capital Costs Incurred But Not Yet Paid CapitalCostsIncurredButNotYetPaid	1900000000	USD
CY2019Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	956000000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3231000000	USD
CY2021	cmcsa	Capital Costs Incurred But Not Yet Paid CapitalCostsIncurredButNotYetPaid	2000000000	USD
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	1100000000	USD
CY2021Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.25
CY2020	cmcsa	Capital Costs Incurred But Not Yet Paid CapitalCostsIncurredButNotYetPaid	1900000000	USD
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	1100000000	USD
CY2020Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.23
CY2019Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.21
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8711000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	11740000000	USD
CY2021Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	56000000	USD
CY2020Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	14000000	USD
CY2021Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	12000000	USD
CY2020Q4	us-gaap	Restricted Cash Noncurrent RestrictedCashNoncurrent	14000000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8778000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	11768000000	USD
CY2021	cmcsa	Operating Lease Expense Inclusive Of Short Term And Variable Lease Expenses OperatingLeaseExpenseInclusiveOfShortTermAndVariableLeaseExpenses	1200000000	USD
CY2020	cmcsa	Operating Lease Expense Inclusive Of Short Term And Variable Lease Expenses OperatingLeaseExpenseInclusiveOfShortTermAndVariableLeaseExpenses	1100000000	USD
CY2019	cmcsa	Operating Lease Expense Inclusive Of Short Term And Variable Lease Expenses OperatingLeaseExpenseInclusiveOfShortTermAndVariableLeaseExpenses	1100000000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	6467000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	3784000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	766000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	718000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	6473000000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	3740000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	932000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	875000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	771000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	626000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	551000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	7933000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	11688000000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	4449000000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	7239000000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P19Y
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0394
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P9Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0358
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	987000000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	936000000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	914000000	USD
CY2021Q4	cmcsa	Carrying Value Of Contractual Obligation CarryingValueOfContractualObligation	1100000000	USD
CY2021Q4	cmcsa	Contractual Value Of A Potential Future Obligation ContractualValueOfAPotentialFutureObligation	1500000000	USD
CY2021	dei	Auditor Firm AuditorFirmId	34

Files In Submission

Name	View Source	Status
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0001166691-22-000009-index.html	Edgar Link	pending
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$CMCSA
COMCAST CORP Stock $cmcsa

2021 Q4 Form 10-K Financial Statement

#000116669122000009 Filed on February 02, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

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$CMCSA COMCAST CORP Stock $cmcsa

2021 Q4 Form 10-K Financial Statement

#000116669122000009 Filed on February 02, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMCSA
COMCAST CORP Stock $cmcsa