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Equity (Narrative) (Details) (USD $)
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12 Months Ended | 1 Months Ended | 11 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2013
Existing Authorization [Member]
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Feb. 28, 2014
New Authorization [Member]
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Dec. 31, 2011
NBCUniversal Media, LLC [Member]
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Dec. 31, 2013
NBCUniversal Media, LLC [Member]
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Dec. 31, 2012
NBCUniversal Media, LLC [Member]
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Jan. 28, 2011
NBCUniversal Media, LLC [Member]
Distribution To Ge Prior To Close Of Joint Venture Transaction [Member]
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Dec. 31, 2013
Class A Common Stock [Member]
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Dec. 31, 2013
Class B Common Stock [Member]
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| Voting power | 66.67% | 33.33% | |||||||||
| Number of votes entitled of each class B common stock | 15 | ||||||||||
| Share repurchase authorization | $ 6,500,000,000 | $ 7,500,000,000 | |||||||||
| Availability remaining under share repurchase program | 1,500,000,000 | ||||||||||
| Dividends paid | 1,964,000,000 | 1,608,000,000 | 1,187,000,000 | 7,400,000,000 | |||||||
| Redemption Transaction Distribution | 3,200,000,000 | ||||||||||
| Distributions to member | $ 244,000,000 | $ 1,400,000,000 | $ 964,000,000 | ||||||||