v2.4.0.8

Related Party Transactions - Consolidated Statement of Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								12 Months Ended			1 Months Ended	11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Jan. 28, 2011 NBCUniversal Media, LLC [Member]	Dec. 31, 2011 NBCUniversal Media, LLC [Member]	Dec. 31, 2013 NBCUniversal Media, LLC [Member]	Dec. 31, 2012 NBCUniversal Media, LLC [Member]	Dec. 31, 2011 Comcast And Consolidated Subsidiaries [Member] NBCUniversal Media, LLC [Member]	Dec. 31, 2013 Comcast And Consolidated Subsidiaries [Member] NBCUniversal Media, LLC [Member]	Dec. 31, 2012 Comcast And Consolidated Subsidiaries [Member] NBCUniversal Media, LLC [Member]
Revenue	$ 16,926	$ 16,151	$ 16,270	$ 15,310	$ 15,937	$ 16,544	$ 15,211	$ 14,878	$ 64,657	$ 62,570	$ 55,842	$ 1,206	$ 19,028	$ 23,650	$ 23,812	$ 1,025	$ 1,262	$ 1,228
Operating costs and expenses																$ (72)	$ (190)	$ (175)

X

- Definition

Operating costs and expenses including amortization of film and television costs but excluding intangible amortization and depreciation.

+ References

No definition available.

+ Details

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X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration