v2.4.1.9
Condensed Consolidated Statement of Comprehensive Income (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Net income $ 2,141us-gaap_ProfitLoss $ 1,938us-gaap_ProfitLoss
Unrealized gains (losses) on marketable securities, net of deferred taxes 0us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax 30us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
Deferred gains (losses) on cash flow hedges, net of deferred taxes (39)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax (2)us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
Amounts reclassified to net income:    
Realized (gains) losses on marketable securities, net of deferred taxes 0us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax (50)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax
Realized (gains) losses on cash flow hedges, net of deferred taxes 37us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax (3)us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax
Currency translation adjustments, net of deferred taxes (40)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax 2us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Comprehensive income 2,099us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest 1,915us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
Net (income) loss attributable to noncontrolling interests and redeemable subsidiary preferred stock (82)cmcsa_NetIncomeLossAttributableToNoncontrollingInterestsAndRedeemableSubsidiaryPreferredStock (67)cmcsa_NetIncomeLossAttributableToNoncontrollingInterestsAndRedeemableSubsidiaryPreferredStock
Comprehensive income attributable to Parent 2,017us-gaap_ComprehensiveIncomeNetOfTax 1,848us-gaap_ComprehensiveIncomeNetOfTax
NBCUniversal Media, LLC [Member]    
Net income 918us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
741us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
Deferred gains (losses) on cash flow hedges, net of deferred taxes 12us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
0us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
Amounts reclassified to net income:    
Currency translation adjustments, net of deferred taxes (63)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
3us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
Comprehensive income 867us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
744us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
Net (income) loss attributable to noncontrolling interests (66)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
(59)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
Comprehensive income attributable to Parent $ 801us-gaap_ComprehensiveIncomeNetOfTax
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember
$ 685us-gaap_ComprehensiveIncomeNetOfTax
/ dei_LegalEntityAxis
= cmcsa_NBCUniversalMediaLLCMember