v3.4.0.3
Supplemental Financial Information (Receivables)(Details) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Receivables, gross $ 6,952 $ 7,595
Less: Allowance for returns and customer incentives 359 473
Less: Allowance for doubtful accounts 218 226
Receivables, net 6,375 6,896
NBCUniversal Media LLC [Member]    
Receivables, gross 5,533 5,949
Less: Allowance for returns and customer incentives 355 469
Less: Allowance for doubtful accounts 74 69
Receivables, net $ 5,104 $ 5,411