v2.4.1.9

Condensed Consolidated Statement of Cash Flows (USD $) | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
Operating Activities |  |
Net cash provided by operating activities | $ 5,245,000,000 us-gaap_NetCashProvidedByUsedInOperatingActivities | $ 4,486,000,000 us-gaap_NetCashProvidedByUsedInOperatingActivities
Investing Activities |  |
Capital expenditures | (1,726,000,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (1,448,000,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Cash paid for intangible assets | (273,000,000)us-gaap_PaymentsToAcquireIntangibleAssets | (217,000,000)us-gaap_PaymentsToAcquireIntangibleAssets
Acquisitions and construction of real estate properties | (24,000,000)cmcsa_PaymentsForAcquisitionsAndConstructionOfRealEstateProperties | 0 cmcsa_PaymentsForAcquisitionsAndConstructionOfRealEstateProperties
Proceeds from sales of businesses and investments | 180,000,000 cmcsa_ProceedsFromSalesOfBusinessesAndInvestments | 300,000,000 cmcsa_ProceedsFromSalesOfBusinessesAndInvestments
Purchases of investments | (32,000,000)us-gaap_PaymentsToAcquireInvestments | (37,000,000)us-gaap_PaymentsToAcquireInvestments
Other | 181,000,000 us-gaap_PaymentsForProceedsFromOtherInvestingActivities | (103,000,000)us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Net cash provided by (used in) investing activities | (1,694,000,000)us-gaap_NetCashProvidedByUsedInInvestingActivities | (1,505,000,000)us-gaap_NetCashProvidedByUsedInInvestingActivities
Financing Activities |  |
Proceeds from (repayments of) short-term borrowings, net | (150,000,000)us-gaap_ProceedsFromRepaymentsOfShortTermDebt | (364,000,000)us-gaap_ProceedsFromRepaymentsOfShortTermDebt
Proceeds from borrowings | 0 us-gaap_ProceedsFromOtherDebt | 2,187,000,000 us-gaap_ProceedsFromOtherDebt
Repurchases and repayments of debt | (909,000,000)us-gaap_RepaymentsOfOtherDebt | (2,260,000,000)us-gaap_RepaymentsOfOtherDebt
Repurchases and retirements of common stock | (2,000,000,000)us-gaap_PaymentsForRepurchaseOfCommonStock | (750,000,000)us-gaap_PaymentsForRepurchaseOfCommonStock
Dividends paid | (572,000,000)us-gaap_PaymentsOfDividends | (508,000,000)us-gaap_PaymentsOfDividends
Issuances of common stock | 28,000,000 us-gaap_ProceedsFromIssuanceOfCommonStock | 20,000,000 us-gaap_ProceedsFromIssuanceOfCommonStock
Distributions to noncontrolling interests and dividends for redeemable subsidiary preferred stock | (62,000,000)cmcsa_DistributionsToNoncontrollingInterestsAndDividendsForRedeemableSubsidiaryPreferredStock | (66,000,000)cmcsa_DistributionsToNoncontrollingInterestsAndDividendsForRedeemableSubsidiaryPreferredStock
Other | 141,000,000 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities | 96,000,000 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Net cash provided by (used in) financing activities | (3,524,000,000)us-gaap_NetCashProvidedByUsedInFinancingActivities | (1,645,000,000)us-gaap_NetCashProvidedByUsedInFinancingActivities
Increase (decrease) in cash and cash equivalents | 27,000,000 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 1,336,000,000 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents, beginning of period | 3,910,000,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 1,718,000,000 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents, end of period | 3,937,000,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | 3,054,000,000 us-gaap_CashAndCashEquivalentsAtCarryingValue
NBCUniversal Media, LLC [Member] |  |
Operating Activities |  |
Net cash provided by operating activities | 1,202,000,000 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | 756,000,000 us-gaap_NetCashProvidedByUsedInOperatingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Investing Activities |  |
Capital expenditures | (268,000,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (291,000,000)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Cash paid for intangible assets | (37,000,000)us-gaap_PaymentsToAcquireIntangibleAssets / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (32,000,000)us-gaap_PaymentsToAcquireIntangibleAssets / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Note receivable from Comcast | (135,000,000)cmcsa_NoteReceivableIssuedFromParent / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | 0 cmcsa_NoteReceivableIssuedFromParent / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Other | 169,000,000 us-gaap_PaymentsForProceedsFromOtherInvestingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (160,000,000)us-gaap_PaymentsForProceedsFromOtherInvestingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Net cash provided by (used in) investing activities | (271,000,000)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (483,000,000)us-gaap_NetCashProvidedByUsedInInvestingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Financing Activities |  |
Proceeds from (repayments of) borrowings from Comcast, net | (896,000,000)cmcsa_ProceedsFromNoteReceivableIssuedToAndBorrowingsFromComcast / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | 139,000,000 cmcsa_ProceedsFromNoteReceivableIssuedToAndBorrowingsFromComcast / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Repurchases and repayments of debt | (1,000,000)us-gaap_RepaymentsOfOtherDebt / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (1,000,000)us-gaap_RepaymentsOfOtherDebt / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Distributions to noncontrolling interests | (51,000,000)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (54,000,000)us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Distributions to member | (195,000,000)us-gaap_PaymentsOfCapitalDistribution / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (195,000,000)us-gaap_PaymentsOfCapitalDistribution / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Other | 0 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (4,000,000)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Net cash provided by (used in) financing activities | (1,143,000,000)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | (115,000,000)us-gaap_NetCashProvidedByUsedInFinancingActivities / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Increase (decrease) in cash and cash equivalents | (212,000,000)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | 158,000,000 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Cash and cash equivalents, beginning of period | 1,248,000,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | 967,000,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember
Cash and cash equivalents, end of period | $ 1,036,000,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember | $ 1,125,000,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = cmcsa_NBCUniversalMediaLLCMember

X
- Definition Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders and dividends for redeemable subsidiary preferred stock. + References No definition available. + Details
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- Definition The cash outflow associated with the revolving credit agreements with Comcast. + References No definition available. + Details
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- Definition Represents the cash inflow from borrowings from Comcast for a note receivable issued to Comcast. + References No definition available. + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585 + Details
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- Definition Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450594&loc=d3e33268-110906 + Details
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- Definition Decrease in noncontrolling interest balance from payment of dividends or other distributions by the non-wholly owned subsidiary or partially owned entity, included in the consolidation of the parent entity, to the noncontrolling interest holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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