v2.4.0.8
Film and Television Costs (Film and Television Costs)(Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Film And Television Costs [Line Items]    
Programming rights, less amortization $ 2,039 $ 1,886
Total film costs, television costs and programming rights 5,922 5,963
Less: Current portion of programming rights 928 909
Film and television costs 4,994 5,054
NBCUniversal Media, LLC [Member]
    
Film And Television Costs [Line Items]    
Programming rights, less amortization 2,003 1,808
Total film costs, television costs and programming rights 5,886 5,885
Less: Current portion of programming rights 903 844
Film and television costs 4,983 5,041
Film Costs [Member]
    
Film And Television Costs [Line Items]    
Released, less amortization 1,630 1,472
Completed, not released 70 99
In production and in development 658 1,048
Total film costs 2,358 2,619
Film Costs [Member] | NBCUniversal Media, LLC [Member]
    
Film And Television Costs [Line Items]    
Released, less amortization 1,630 1,472
Completed, not released 70 99
In production and in development 658 1,048
Total film costs 2,358 2,619
Television Costs [Member]
    
Film And Television Costs [Line Items]    
Released, less amortization 1,155 1,124
In production and in development 370 334
Total television costs 1,525 1,458
Television Costs [Member] | NBCUniversal Media, LLC [Member]
    
Film And Television Costs [Line Items]    
Released, less amortization 1,155 1,124
In production and in development 370 334
Total television costs $ 1,525 $ 1,458