Film and Television Costs (Narrative)(Details) $ in Millions	12 Months Ended
Dec. 31, 2015 USD ($)
Amortization of completed film and television production expected to be amortized during the next fiscal year	$ 1,500
Expected amortization percentage of released and unamortized film and television costs	87.00%
Remaining unamortized costs of acquired film and television libraries	$ 449
Expected amortization percentage of unamortized film and television library costs during the next three fiscal years	49.00%
NBCUniversal Media LLC [Member]
Amortization of completed film and television production expected to be amortized during the next fiscal year	$ 1,500
Expected amortization percentage of released and unamortized film and television costs	87.00%
Remaining unamortized costs of acquired film and television libraries	$ 449
Expected amortization percentage of unamortized film and television library costs during the next three fiscal years	49.00%

The remaining amount of costs related to film and television libraries that are expected to be amortized.

No definition available.

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- Definition

The percentage of unamortized film and television library costs that are expected to be amortized within three years from the date of the balance sheet.

+ References

No definition available.

+ Details

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- Definition

The amount of film costs related to completed films that are expected to be amortized during the upcoming operating cycle.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473108&loc=d3e54406-107959

+ Details

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Period Type:	duration

- Definition

The percentage of unamortized film costs for released films, excluding acquired film libraries, that it expects to amortize within three years from the date of the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6473108&loc=d3e54434-107959

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

- Details

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