v3.5.0.2
Supplemental Financial Information (Receivables)(Details) - USD ($)
$ in Millions
Jun. 30, 2016
Dec. 31, 2015
Receivables, gross $ 7,255 $ 7,595
Less: Allowance for returns and customer incentives 292 473
Less: Allowance for doubtful accounts 255 226
Receivables, net 6,708 6,896
NBCUniversal Media LLC [Member]    
Receivables, gross 5,597 5,949
Less: Allowance for returns and customer incentives 288 469
Less: Allowance for doubtful accounts 81 69
Receivables, net $ 5,228 $ 5,411