Earnings Per Share (Schedule of Weighted-Average Number of Shares Outstanding) (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 |
|
Series A, B and C Common Stock [Member] | ||||
Weighted average number of shares outstanding, basic (in shares) | 384 | 404 | 387 | 409 |
Weighted average dilutive effect of assumed preferred stock conversion (in shares) | 192 | 208 | 193 | 211 |
Dilutive effect of share-based awards (in shares) | 2 | 4 | 3 | 3 |
Weighted Average Number of Shares Outstanding, Diluted (in shares) | 578 | 616 | 583 | 623 |
Net income available to Discovery Communications, Inc. stockholders, Diluted | $ 374 | $ 408 | $ 589 | $ 671 |
Series C Convertible Preferred Stock [Member] | ||||
Weighted average number of shares outstanding, basic (in shares) | 25 | 33 | 26 | 35 |
Weighted Average Number of Shares Outstanding, Diluted (in shares) | 26 | 35 | ||
Net income available to Discovery Communications, Inc. stockholders, Diluted | $ 32 | $ 44 | $ 52 | $ 74 |