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Commitments and Contingencies (Narrative) (Details)
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Dec. 31, 2013
numberofemployees
|
|---|---|
| Number of employees covered under collective bargaining agreements | 7,200 |
| Percentage of employees covered under collective bargaining agreements that have expired or are scheduled to expire during 2014 | 19.00% |
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NBCUniversal Media, LLC [Member]
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| Number of employees covered under collective bargaining agreements | 7,200 |
| Percentage of employees covered under collective bargaining agreements that have expired or are scheduled to expire during 2014 | 19.00% |