v2.4.0.8
Long-Term Debt (Debt Maturities) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
2014 $ 3,280
2015 3,420
2016 3,501
2017 2,557
2018 5,394
Thereafter 29,695
Weighted average interest rate 4.80%
NBCUniversal Media, LLC [Member]
 
2014 906
2015 1,032
2016 1,008
2017 2
2018 2
Thereafter $ 8,215
Revolving bank credit facility [Member]
 
Weighted average interest rate 1.166%
Senior notes with maturities of 5 years or less [Member]
 
Weighted average interest rate 4.718%
Senior notes with maturities between 6 and 10 years [Member]
 
Weighted average interest rate 4.558%
Senior notes with maturities greater than 10 years [Member]
 
Weighted average interest rate 5.971%
2014
 
Weighted average interest rate 2.343%
2014 | NBCUniversal Media, LLC [Member]
 
Weighted average interest rate 2.121%
2015
 
Weighted average interest rate 5.899%
2015 | NBCUniversal Media, LLC [Member]
 
Weighted average interest rate 3.597%
2016
 
Weighted average interest rate 4.265%
2016 | NBCUniversal Media, LLC [Member]
 
Weighted average interest rate 2.876%
2017
 
Weighted average interest rate 6.977%
2017 | NBCUniversal Media, LLC [Member]
 
Weighted average interest rate 6.287%
2018
 
Weighted average interest rate 4.51%
2018 | NBCUniversal Media, LLC [Member]
 
Weighted average interest rate 6.299%
Thereafter [Member]
 
Weighted average interest rate 5.451%
Thereafter [Member] | NBCUniversal Media, LLC [Member]
 
Weighted average interest rate 4.871%