Earnings Per Share (Narrative) (Details) - USD ($) shares in Millions, $ in Millions |
3 Months Ended | 6 Months Ended | |||
---|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
Dec. 15, 2016 |
|
Series C Convertible Preferred Stock [Member] | |||||
Weighted Average Number of Shares Outstanding, Diluted (in shares) | 26 | 35 | |||
Net income available to Discovery Communications, Inc. stockholders, Diluted | $ 32 | $ 44 | $ 52 | $ 74 | |
prepaid stock repurchase contract [Member] | |||||
Prepaidrepurchaseofcommonstock | $ 57 |