$CMCSA
COMCAST CORP Stock $cmcsa

$cmcsa Overview Financials Valuation SEC Filings Company Website

2016 Q3 Form 10-Q Financial Statement

#000119312516747958 Filed on October 26, 2016

Income Statement

Concept	2016 Q3	2015 Q3
Revenue	$21.32B	$18.67B
YoY Change	14.19%	11.18%
Cost Of Revenue	$7.003B	$5.582B
YoY Change	25.46%	16.97%
Gross Profit	$14.32B	$13.09B
YoY Change	9.39%	8.89%
Gross Profit Margin	67.15%	70.1%
Selling, General & Admin	$7.481B	$6.903B
YoY Change	8.37%	9.31%
% of Gross Profit	52.26%	52.75%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$1.865B	$1.697B
YoY Change	9.9%	10.27%
% of Gross Profit	13.03%	12.97%
Operating Expenses	$9.876B	$9.086B
YoY Change	8.69%	9.81%
Operating Profit	$4.440B	$4.001B
YoY Change	10.97%	6.84%
Interest Expense	$751.0M	$659.0M
YoY Change	13.96%	-0.6%
% of Operating Profit	16.91%	16.47%
Other Income/Expense, Net	-$716.0M	-$737.0M
YoY Change	-2.85%	4.54%
Pretax Income	$3.724B	$3.264B
YoY Change	14.09%	7.37%
Income Tax	$1.400B	$1.223B
% Of Pretax Income	37.59%	37.47%
Net Earnings	$2.237B	$1.996B
YoY Change	12.07%	-22.99%
Net Earnings / Revenue	10.49%	10.69%
Basic Earnings Per Share	$0.47	$0.81
Diluted Earnings Per Share	$0.46	$0.80
COMMON SHARES
Basic Shares Outstanding	4.805B shares	2.472B shares
Diluted Shares Outstanding	4.861B shares	2.502B shares

Balance Sheet

Concept	2016 Q3	2015 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.973B	$2.060B
YoY Change	44.32%	-59.88%
Cash & Equivalents	$2.807B	$1.893B
Short-Term Investments	$166.0M	$167.0M
Other Short-Term Assets	$3.519B	$1.814B
YoY Change	93.99%	7.08%
Inventory
Prepaid Expenses
Receivables	$7.533B	$6.527B
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$15.23B	$11.50B
YoY Change	32.41%	-17.47%
LONG-TERM ASSETS
Property, Plant & Equipment	$35.66B	$32.17B
YoY Change	10.84%	5.95%
Goodwill	$36.65B	$27.49B
YoY Change	33.32%	0.62%
Intangibles
YoY Change
Long-Term Investments	$1.212B	$801.0M
YoY Change	51.31%	-21.78%
Other Assets	$2.658B	$2.500B
YoY Change	6.32%	1.05%
Total Long-Term Assets	$162.7B	$147.5B
YoY Change	10.33%	1.48%
TOTAL ASSETS
Total Short-Term Assets	$15.23B	$11.50B
Total Long-Term Assets	$162.7B	$147.5B
Total Assets	$177.9B	$159.0B
YoY Change	11.93%	-0.18%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$6.594B	$5.996B
YoY Change	9.97%	5.56%
Accrued Expenses	$5.201B	$5.455B
YoY Change	-4.66%	-0.11%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$3.333B	$3.152B
YoY Change	5.74%	-10.53%
Total Short-Term Liabilities	$18.04B	$17.36B
YoY Change	3.91%	1.61%
LONG-TERM LIABILITIES
Long-Term Debt	$57.10B	$44.61B
YoY Change	28.0%	-0.5%
Other Long-Term Liabilities	$11.12B	$10.69B
YoY Change	3.97%	2.95%
Total Long-Term Liabilities	$11.12B	$10.69B
YoY Change	3.97%	2.95%
TOTAL LIABILITIES
Total Short-Term Liabilities	$18.04B	$17.36B
Total Long-Term Liabilities	$11.12B	$10.69B
Total Liabilities	$29.16B	$28.05B
YoY Change	3.94%	2.11%
SHAREHOLDERS EQUITY
Retained Earnings	$22.51B	$20.88B
YoY Change	7.79%	-4.23%
Common Stock	$28.00M	$29.00M
YoY Change	-3.45%	-3.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$7.517B	$7.517B
YoY Change	0.0%	0.0%
Treasury Stock Shares
Shareholders Equity	$53.48B	$51.72B
YoY Change
Total Liabilities & Shareholders Equity	$177.9B	$159.0B
YoY Change	11.93%	-0.18%

Cashflow Statement

Concept	2016 Q3	2015 Q3
OPERATING ACTIVITIES
Net Income	$2.237B	$1.996B
YoY Change	12.07%	-22.99%
Depreciation, Depletion And Amortization	$1.865B	$1.697B
YoY Change	9.9%	10.27%
Cash From Operating Activities	$3.703B	$4.979B
YoY Change	-25.63%	4.71%
INVESTING ACTIVITIES
Capital Expenditures	$2.406B	$2.165B
YoY Change	11.13%	11.03%
Acquisitions
YoY Change
Other Investing Activities	-$5.492B	-$487.0M
YoY Change	1027.72%	-3143.75%
Cash From Investing Activities	-$8.324B	-$2.968B
YoY Change	180.46%	35.4%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	2.763B	-3.604B
YoY Change	-176.66%	-892.09%
NET CHANGE
Cash From Operating Activities	3.703B	4.979B
Cash From Investing Activities	-8.324B	-2.968B
Cash From Financing Activities	2.763B	-3.604B
Net Change In Cash	-1.858B	-1.593B
YoY Change	16.64%	-152.78%
FREE CASH FLOW
Cash From Operating Activities	$3.703B	$4.979B
Capital Expenditures	$2.406B	$2.165B
Free Cash Flow	$1.297B	$2.814B
YoY Change	-53.91%	0.32%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015Q3	us-gaap	Management Fees Revenue ManagementFeesRevenue	0	USD
CY2016Q3	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	80000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10154000000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1300000000	USD
CY2016Q3	cmcsa	Redeemable Noncontrolling Interests And Redeemable Subsidiary Preferred Stock RedeemableNoncontrollingInterestsAndRedeemableSubsidiaryPreferredStock	1326000000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	4353000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	7000000	USD
	cmcsa	Gain Loss On Investments And Noncash Other Income Expense Net GainLossOnInvestmentsAndNoncashOtherIncomeExpenseNet	344000000	USD
CY2015Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	5462000000	USD
	cmcsa	Operating Income Excluding Depreciation And Amortization OperatingIncomeExcludingDepreciationAndAmortization	19657000000	USD
CY2015Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-53000000	USD
CY2015Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	48994000000	USD
CY2016Q3	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	34523000000	USD
CY2015Q3	cmcsa	Other Operating And Administrative OtherOperatingAndAdministrative	5390000000	USD
CY2015Q4	cmcsa	Film And Television Costs FilmAndTelevisionCosts	5855000000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	21413000000	USD
	cmcsa	Noncash Interest Expense Income Net NoncashInterestExpenseIncomeNet	147000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-64000000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	286000000	USD
	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	168000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	122000000	USD
	us-gaap	Management Fees Revenue ManagementFeesRevenue	0	USD
CY2015Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	486000000	USD
CY2016Q3	us-gaap	Assets Assets	177924000000	USD
	cmcsa	Payments For Acquisitions And Construction Of Real Estate Properties PaymentsForAcquisitionsAndConstructionOfRealEstateProperties	116000000	USD
	cmcsa	Fair Value Of Stock Options Granted FairValueOfStockOptionsGranted	11.45
CY2015Q4	us-gaap	Direct To Television Film Costs Released DirectToTelevisionFilmCostsReleased	1573000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-623000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-2000000	USD
CY2016Q3	cmcsa	Investments In And Amounts Due From Subsidiaries Eliminated Upon Consolidation InvestmentsInAndAmountsDueFromSubsidiariesEliminatedUponConsolidation	0	USD
CY2015Q3	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	18669000000	USD
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	4440000000	USD
	cmcsa	Programming And Production Costs ProgrammingAndProductionCosts	17926000000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	-214000000	USD
CY2015Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	113000000	USD
CY2015Q4	cmcsa	Returns And Incentives Allowance ReturnsAndIncentivesAllowance	473000000	USD
	cmcsa	Noncash Interest Expense Income Net NoncashInterestExpenseIncomeNet	172000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1000000	USD
CY2016Q3	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	21319000000	USD
CY2016Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2431000000	shares
CY2016Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	18178000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-42000000	USD
CY2015Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1996000000	USD
CY2016Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	5201000000	USD
	cmcsa	Increasedecreaseinfilmandtelevisioncostnet Increasedecreaseinfilmandtelevisioncostnet	593000000	USD
CY2015Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	7595000000	USD
CY2016Q3	us-gaap	Direct To Television Film Costs Released DirectToTelevisionFilmCostsReleased	1839000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	0	USD
CY2016Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	34000000	USD
CY2016Q3	us-gaap	Investments Investments	3911000000	USD
CY2016Q3	us-gaap	Other Assets Current OtherAssetsCurrent	3519000000	USD
CY2015Q3	us-gaap	Profit Loss ProfitLoss	2041000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	197000000	USD
CY2015Q4	us-gaap	Minority Interest MinorityInterest	1709000000	USD
CY2016Q3	us-gaap	Depreciation Depreciation	1865000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3762000000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	985000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	2043000000	USD
	cmcsa	Payments For Acquisitions And Construction Of Real Estate Properties PaymentsForAcquisitionsAndConstructionOfRealEstateProperties	303000000	USD
CY2016Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2403000000	shares
CY2015Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2016Q3	cmcsa	Accrued Participations And Residuals Current AccruedParticipationsAndResidualsCurrent	1570000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-202000000	USD
CY2016Q3	cmcsa	Mark To Market Adjustment On Derivative Component Of Prepaid Forward Sale Agreements MarkToMarketAdjustmentOnDerivativeComponentOfPrepaidForwardSaleAgreements	4000000	USD
CY2015Q4	us-gaap	Theatrical Film Costs TheatricalFilmCosts	2408000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1000000	USD
CY2015Q4	us-gaap	Equity Method Investments EquityMethodInvestments	678000000	USD
CY2016Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	177924000000	USD
CY2016Q3	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	17356000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3145000000	USD
CY2015Q4	cmcsa	Total Film And Television Costs And Programming Rights After Amortization TotalFilmAndTelevisionCostsAndProgrammingRightsAfterAmortization	7068000000	USD
CY2016Q3	cmcsa	Programming Rights Less Amortization ProgrammingRightsLessAmortization	2587000000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-174000000	USD
CY2015Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-29000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	321000000	USD
CY2015Q4	us-gaap	Interest Rate Derivative Assets At Fair Value InterestRateDerivativeAssetsAtFairValue	53000000	USD
CY2015Q4	cmcsa	Direct To Television Film Costs In Production And In Development DirectToTelevisionFilmCostsInProductionAndInDevelopment	737000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	34000000	USD
CY2015Q4	us-gaap	Assets Current AssetsCurrent	12303000000	USD
CY2015Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-2017000000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.825
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-313000000	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	3762000000	USD
CY2015Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	225000000	USD
CY2016Q3	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	0	USD
CY2016Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	22510000000	USD
CY2015Q3	cmcsa	Operating Income Excluding Depreciation And Amortization OperatingIncomeExcludingDepreciationAndAmortization	6184000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	946000000	USD
CY2016Q3	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	69400000000	USD
	dei	Document Period End Date DocumentPeriodEndDate	2016-09-30
CY2015Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	38518000000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2498000000	shares
CY2016Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	6594000000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	1944000000	USD
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1405000000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	343000000	USD
CY2016Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	76000000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2015Q4	us-gaap	Indefinite Lived Franchise Rights IndefiniteLivedFranchiseRights	59364000000	USD
CY2016Q3	us-gaap	Treasury Stock Value TreasuryStockValue	7517000000	USD
CY2016Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	10678000000	USD
CY2015Q3	us-gaap	Depreciation Depreciation	1697000000	USD
CY2016Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	530000000	USD
CY2015Q3	us-gaap	Interest Expense InterestExpense	659000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	1000000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1899000000	USD
CY2016Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	28000000	shares
CY2016Q3	us-gaap	Stockholders Equity StockholdersEquity	53481000000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	58000000	USD
CY2016Q3	cmcsa	Accrued Expenses And Other Current Liabilities Including Deferred Revenue AccruedExpensesAndOtherCurrentLiabilitiesIncludingDeferredRevenue	6541000000	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	46000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	7000000	USD
CY2015Q4	cmcsa	Redeemable Noncontrolling Interests And Redeemable Subsidiary Preferred Stock RedeemableNoncontrollingInterestsAndRedeemableSubsidiaryPreferredStock	1221000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	532000000	USD
CY2015Q4	us-gaap	Other Liabilities Fair Value Disclosure OtherLiabilitiesFairValueDisclosure	91000000	USD
CY2015Q3	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2165000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-7204000000	USD
	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	59378000000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	166574000000	USD
CY2015Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3264000000	USD
CY2016Q3	us-gaap	Management Fees Revenue ManagementFeesRevenue	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-79000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	12000000	USD
	us-gaap	Goodwill Other Changes GoodwillOtherChanges	-259000000	USD
CY2015Q3	us-gaap	Costs And Expenses CostsAndExpenses	14668000000	USD
CY2016Q3	us-gaap	Debt Current DebtCurrent	3333000000	USD
	cmcsa	Net Transactions With Affiliates NetTransactionsWithAffiliates	0	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	3904000000	USD
CY2015Q4	us-gaap	Common Stock Value CommonStockValue	29000000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	6282000000	USD
CY2015Q4	us-gaap	Theatrical Film Costs Completed And Not Released TheatricalFilmCostsCompletedAndNotReleased	226000000	USD
	cmcsa	Increasedecreaseinfilmandtelevisioncostnet Increasedecreaseinfilmandtelevisioncostnet	65000000	USD
	cmcsa	Equity Profit Loss EquityProfitLoss	6565000000	USD
CY2015Q3	us-gaap	Impairment Of Investments ImpairmentOfInvestments	15000000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	2994000000	USD
CY2015Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	30000000	shares
CY2015Q4	us-gaap	Long Term Investments LongTermInvestments	3224000000	USD
	cmcsa	Change In Current And Noncurrent Receivables Net ChangeInCurrentAndNoncurrentReceivablesNet	315000000	USD
CY2015Q3	cmcsa	Programming And Production Costs ProgrammingAndProductionCosts	5582000000	USD
	cmcsa	Other Operating And Administrative OtherOperatingAndAdministrative	17280000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	495000000	USD
CY2016Q3	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	60400000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	45000000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	1000000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1000000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	67000000	USD
CY2016Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
	cmcsa	Stock Options Granted StockOptionsGranted	20700000	shares
CY2015Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1000000	USD
CY2015Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	1302000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10617000000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	169000000	USD
CY2016Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	2000000	USD
CY2016Q3	us-gaap	Impairment Of Investments ImpairmentOfInvestments	7000000	USD
CY2015Q3	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	0	USD
CY2015Q4	us-gaap	Trading Securities TradingSecurities	22000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	430000000	USD
CY2015Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	48100000000	USD
CY2016Q3	us-gaap	Theatrical Film Costs TheatricalFilmCosts	3210000000	USD
CY2016Q3	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	30000000	USD
CY2015Q4	us-gaap	Debt Current DebtCurrent	3627000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	23000000	USD
CY2015Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	133000000	USD
CY2015Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1893000000	USD
	us-gaap	Investment Income Nonoperating InvestmentIncomeNonoperating	24000000	USD
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.75
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	7062000000	USD
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CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2015Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
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CY2016Q3	cmcsa	Theatrical Film Costs In Production And In Development TheatricalFilmCostsInProductionAndInDevelopment	1402000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	5770000000	USD
CY2015Q3	cmcsa	Mark To Market Adjustment On Derivative Component Of Prepaid Forward Sale Agreements MarkToMarketAdjustmentOnDerivativeComponentOfPrepaidForwardSaleAgreements	5000000	USD
	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	0	USD
CY2015Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1000000	USD
CY2016Q3	us-gaap	Revenues Revenues	21319000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6192000000	USD
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CY2015Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-737000000	USD
CY2016Q3	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1031000000	USD
CY2016Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-11000000	USD
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CY2015Q4	cmcsa	Theatrical Film Costs In Production And In Development TheatricalFilmCostsInProductionAndInDevelopment	907000000	USD
CY2016Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2807000000	USD
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	us-gaap	Unrealized Gain Loss On Securities UnrealizedGainLossOnSecurities	42000000	USD
CY2015Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	3000000	USD
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	us-gaap	Profit Loss ProfitLoss	6628000000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	46783000000	USD
CY2016Q3	us-gaap	Long Term Investments LongTermInvestments	3857000000	USD
	us-gaap	Depreciation Depreciation	5518000000	USD
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	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	7157000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-75000000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	391000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-8000000	USD
CY2016Q3	us-gaap	Trading Securities TradingSecurities	5000000	USD
CY2015Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1223000000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	210000000	USD
CY2016Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2270000000	USD
CY2015Q3	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	27000000	USD
	cmcsa	Distributions To Noncontrolling Interests And Dividends For Redeemable Subsidiary Preferred Stock DistributionsToNoncontrollingInterestsAndDividendsForRedeemableSubsidiaryPreferredStock	178000000	USD
CY2016Q3	us-gaap	Direct To Television Film Costs DirectToTelevisionFilmCosts	2725000000	USD
CY2016Q3	us-gaap	Profit Loss ProfitLoss	2324000000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	117000000	USD
CY2016Q3	cmcsa	Returns And Incentives Allowance ReturnsAndIncentivesAllowance	289000000	USD
	us-gaap	Sales Revenue Services Net SalesRevenueServicesNet	55265000000	USD
CY2015Q3	us-gaap	Interest Paid Net InterestPaidNet	673000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-14000000	USD
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.62
CY2015Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	16946000000	USD
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CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	2237000000	USD
CY2016Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	-52000000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-32000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2716000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-6000000	USD
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CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	226000000	USD
CY2016Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	268000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-42000000	USD
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CY2016Q3	us-gaap	Common Stock Value CommonStockValue	28000000	USD
	cmcsa	Change In Current And Noncurrent Receivables Net ChangeInCurrentAndNoncurrentReceivablesNet	322000000	USD
CY2016Q3	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	38426000000	USD
CY2016Q3	us-gaap	Equity Method Investments EquityMethodInvestments	1212000000	USD
	us-gaap	Revenues Revenues	55265000000	USD
CY2016Q3	us-gaap	Liabilities Current LiabilitiesCurrent	18038000000	USD
	cmcsa	Proceeds From Sales Of Businesses And Investments ProceedsFromSalesOfBusinessesAndInvestments	420000000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	53978000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	6000000	USD
	cmcsa	Equity Profit Loss EquityProfitLoss	6298000000	USD
	cmcsa	Programming And Production Costs ProgrammingAndProductionCosts	16714000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6607000000	USD
CY2016Q3	cmcsa	Other Operating And Administrative OtherOperatingAndAdministrative	5994000000	USD
CY2016Q3	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	31000000	USD
	us-gaap	Profit Loss ProfitLoss	6357000000	USD
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.92
CY2015Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-41000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-8626000000	USD
CY2015Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2016Q3	cmcsa	Total Film And Television Costs And Programming Rights After Amortization TotalFilmAndTelevisionCostsAndProgrammingRightsAfterAmortization	8522000000	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	5770000000	USD
CY2015Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	9868000000	USD
CY2016Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	1487000000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	52269000000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	280000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	1871000000	USD
CY2016Q3	us-gaap	Marketable Securities MarketableSecurities	166000000	USD
CY2016Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-34000000	USD
	us-gaap	Depreciation Depreciation	5005000000	USD
CY2016Q3	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2406000000	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	4001000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	12595000000	USD
	cmcsa	Mark To Market Adjustment On Derivative Component Of Prepaid Forward Sale Agreements MarkToMarketAdjustmentOnDerivativeComponentOfPrepaidForwardSaleAgreements	42000000	USD
CY2016Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	11119000000	USD
CY2016Q3	us-gaap	Costs And Expenses CostsAndExpenses	16879000000	USD
CY2015Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	91000000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	1000000	USD
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CY2015Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-8000000	USD
CY2016Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1400000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13813000000	USD
CY2015Q4	cmcsa	Accrued Participations And Residuals Current AccruedParticipationsAndResidualsCurrent	1572000000	USD
	us-gaap	Interest Expense InterestExpense	2186000000	USD
CY2015Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2502000000	shares
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	529000000	USD
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CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	7517000000	USD
CY2015Q4	us-gaap	Investments Investments	3330000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-64000000	USD
CY2016Q3	us-gaap	Theatrical Film Costs Released TheatricalFilmCostsReleased	1586000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	6562000000	USD
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CY2016Q3	cmcsa	Operating Income Excluding Depreciation And Amortization OperatingIncomeExcludingDepreciationAndAmortization	6835000000	USD
CY2016Q3	cmcsa	Film And Television Costs FilmAndTelevisionCosts	7153000000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	106000000	USD
	cmcsa	Other Investment Income Loss Net OtherInvestmentIncomeLossNet	69000000	USD
CY2016Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	57095000000	USD
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	32000000	shares
CY2016Q3	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.275
	us-gaap	Stockholders Equity Other StockholdersEquityOther	-113000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1842000000	USD
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	139000000	USD
CY2015Q4	cmcsa	Other Stockholders Equity OtherStockholdersEquity	52240000000	USD
CY2016Q3	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	212000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2015Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-195000000	USD
CY2015Q4	us-gaap	Cost Method Investments CostMethodInvestments	2485000000	USD
CY2016Q3	cmcsa	Other Stockholders Equity OtherStockholdersEquity	53453000000	USD
CY2016Q3	us-gaap	Interest Expense InterestExpense	751000000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-20000000	USD
	cmcsa	Contributions From And Distributions To Noncontrolling Interests ContributionsFromAndDistributionsToNoncontrollingInterests	-114000000	USD
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	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2530000000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	27000000	shares
	cmcsa	Proceeds From Sales Of Businesses And Investments ProceedsFromSalesOfBusinessesAndInvestments	188000000	USD
CY2016Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	-8000000	USD
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CY2015Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	33566000000	USD
CY2016Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	7533000000	USD
CY2015Q4	cmcsa	Accrued Expenses And Other Current Liabilities Including Deferred Revenue AccruedExpensesAndOtherCurrentLiabilitiesIncludingDeferredRevenue	6764000000	USD
	us-gaap	Interest Expense InterestExpense	2028000000	USD
CY2015Q4	cmcsa	Programming Rights Less Amortization ProgrammingRightsLessAmortization	2350000000	USD
CY2016Q3	us-gaap	Available For Sale Securities AvailableForSaleSecurities	137000000	USD
CY2016Q3	cmcsa	Programming Rights Current ProgrammingRightsCurrent	1369000000	USD
CY2015Q3	cmcsa	Other Investment Income Loss Net OtherInvestmentIncomeLossNet	-36000000	USD
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CY2015Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	6896000000	USD
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	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	6143000000	USD
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CY2015Q4	us-gaap	Marketable Securities MarketableSecurities	167000000	USD
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CY2015Q3	us-gaap	Marketing And Advertising Expense MarketingAndAdvertisingExpense	1513000000	USD
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CY2015Q4	us-gaap	Direct To Television Film Costs DirectToTelevisionFilmCosts	2310000000	USD
CY2016Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3724000000	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	28000000	USD
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	us-gaap	Depreciation And Amortization DepreciationAndAmortization	6410000000	USD
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	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3996000000	USD
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CY2016Q3	us-gaap	Minority Interest MinorityInterest	2342000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
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CY2015Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1967000000	USD
CY2016Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	6600000000	USD
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CY2016Q3	us-gaap	Theatrical Film Costs Completed And Not Released TheatricalFilmCostsCompletedAndNotReleased	222000000	USD
CY2015Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	6215000000	USD
CY2015Q4	cmcsa	Programming Rights Current ProgrammingRightsCurrent	1213000000	USD
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CY2016Q3	us-gaap	Indefinite Lived Franchise Rights IndefiniteLivedFranchiseRights	59364000000	USD
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CY2016Q3	cmcsa	Net Income Loss Attributable To Noncontrolling Interests And Redeemable Subsidiary Preferred Stock NetIncomeLossAttributableToNoncontrollingInterestsAndRedeemableSubsidiaryPreferredStock	87000000	USD
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	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13497000000	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	916000000	USD
	us-gaap	Revenues Revenues	59378000000	USD
	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	91000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-40000000	USD
	us-gaap	Goodwill Translation Adjustments GoodwillTranslationAdjustments	1086000000	USD
	cmcsa	Other Investment Income Loss Net OtherInvestmentIncomeLossNet	-20000000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-30000000	USD
CY2016Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	35656000000	USD
CY2015Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2472000000	shares
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	-26000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-67000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1544000000	USD
	us-gaap	Management Fees Revenue ManagementFeesRevenue	0	USD
	cmcsa	Distributions To Noncontrolling Interests And Dividends For Redeemable Subsidiary Preferred Stock DistributionsToNoncontrollingInterestsAndDividendsForRedeemableSubsidiaryPreferredStock	194000000	USD
CY2016Q3	cmcsa	Direct To Television Film Costs In Production And In Development DirectToTelevisionFilmCostsInProductionAndInDevelopment	886000000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	712000000	USD
CY2016Q3	us-gaap	Depreciation And Amortization DepreciationAndAmortization	2395000000	USD
CY2015Q3	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1146000000	USD
	cmcsa	Net Income Loss Attributable To Noncontrolling Interests And Redeemable Subsidiary Preferred Stock NetIncomeLossAttributableToNoncontrollingInterestsAndRedeemableSubsidiaryPreferredStock	165000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1978000000	USD
CY2016Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1000000	USD
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	cmcsa	Net Transactions With Affiliates NetTransactionsWithAffiliates	0	USD
CY2015Q4	us-gaap	Theatrical Film Costs Released TheatricalFilmCostsReleased	1275000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5862000000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	1823000000	USD
CY2015Q3	cmcsa	Net Income Loss Attributable To Noncontrolling Interests And Redeemable Subsidiary Preferred Stock NetIncomeLossAttributableToNoncontrollingInterestsAndRedeemableSubsidiaryPreferredStock	45000000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.48
CY2015Q4	us-gaap	Assets Assets	166574000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	33665000000	USD
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2016
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	2272000000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	2880000000	USD
CY2016Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.275
CY2016Q3	cmcsa	Programming And Production Costs ProgrammingAndProductionCosts	7003000000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	32945000000	USD
CY2016Q3	us-gaap	Goodwill Goodwill	36652000000	USD
CY2015Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-16000000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2295000000	USD
	cmcsa	Deposit Deposit	0	USD
	cmcsa	Deposit Deposit	1761000000	USD
CY2016Q3	us-gaap	Commercial Paper CommercialPaper	505000000	USD

Files In Submission

Name	View Source	Status
0001193125-16-747958-index-headers.html	Edgar Link	pending
0001193125-16-747958-index.html	Edgar Link	pending
0001193125-16-747958.txt	Edgar Link	pending
0001193125-16-747958-xbrl.zip	Edgar Link	pending
cmcsa-20160930.xml	Edgar Link	completed
cmcsa-20160930.xsd	Edgar Link	pending
cmcsa-20160930_cal.xml	Edgar Link	unprocessable
cmcsa-20160930_def.xml	Edgar Link	unprocessable
cmcsa-20160930_lab.xml	Edgar Link	unprocessable
cmcsa-20160930_pre.xml	Edgar Link	unprocessable
d254415d10q.htm	Edgar Link	pending
d254415dex311.htm	Edgar Link	pending
d254415dex312.htm	Edgar Link	pending
d254415dex321.htm	Edgar Link	pending
d254415dex322.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
g254415g26o35.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$CMCSA
COMCAST CORP Stock $cmcsa

2016 Q3 Form 10-Q Financial Statement

#000119312516747958 Filed on October 26, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMCSA COMCAST CORP Stock $cmcsa

2016 Q3 Form 10-Q Financial Statement

#000119312516747958 Filed on October 26, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CMCSA
COMCAST CORP Stock $cmcsa