v3.5.0.2

Significant Transactions (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2016
Preliminary Allocation of Purchase Price |
Preliminary Allocation of Purchase Price
(in millions) |  |
Property and equipment | $ | 793
Intangible assets |  | 323
Working capital |  | (33)
Debt |  | (3,271)
Other noncurrent assets and liabilities |  | 43
Identifiable net assets (liabilities) acquired |  | (2,145)
Noncontrolling interest |  | (1,440)
Goodwill |  | 5,084
Cash consideration transferred | $ | 1,499
Unaudited Pro Forma Information |
|  | Three Months Ended | Six Months Ended
(in millions, except per share amounts) |  | June 30, 2015 | June 30, 2015
Revenue | $ | 18,997 | $ | 37,134
Net income | $ | 2,208 | $ | 4,385
Net income attributable to Comcast Corporation | $ | 2,153 | $ | 4,230
Basic earnings per common share attributable to Comcast Corporation shareholders | $ | 0.86 | $ | 1.69
Diluted earnings per common share attributable to Comcast Corporation shareholders | $ | 0.85 | $ | 1.66
NBCUniversal Media LLC [Member] |
Preliminary Allocation of Purchase Price |
Preliminary Allocation of Purchase Price
(in millions) |  |
Property and equipment | $ | 793
Intangible assets |  | 323
Working capital |  | (33)
Debt |  | (3,271)
Other noncurrent assets and liabilities |  | 43
Identifiable net assets (liabilities) acquired |  | (2,145)
Noncontrolling interest |  | (1,440)
Goodwill |  | 5,084
Cash consideration transferred | $ | 1,499
Unaudited Pro Forma Information |
|  | Three Months Ended | Six Months Ended
(in millions) |  | June 30, 2015 | June 30, 2015
Revenue | $ | 7,484 | $ | 14,372
Net income | $ | 977 | $ | 1,931
Net income attributable to NBCUniversal | $ | 928 | $ | 1,798

X
- Definition Tabular disclosure of all of the preliminary values of the purchase price and assets and liabilities acquired in a business combination. + References No definition available. + Details
Name: | cmcsa_ScheduleOfPurchasePriceAllocationTableTextBlock1PolicyTextBlock
Namespace Prefix: | cmcsa_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionProFormaInformationTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=cmcsa_NBCUniversalMediaLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |