Table:
|  |  | Year Ended December 31, 2019 |  |  |
| --- | --- | --- | --- | --- |
|  | Activision | Blizzard | King | Total |
| Segment Revenues |  |  |  |  |
| Net revenues from external customers | $2,219 | $1,676 | $2,031 | $5,926 |
| Intersegment net revenues (1) | — | 43 | — | 43 |
| Segment net revenues | $2,219 | $1,719 | $2,031 | $5,969 |
| Segment operating income | $850 | $464 | $740 | $2,054 |
|  |  | Year Ended December 31, 2018 |  |  |
|  | Activision | Blizzard | King | Total |
| Segment Revenues |  |  |  |  |
| Net revenues from external customers | $2,458 | $2,238 | $2,086 | $6,782 |
| Intersegment net revenues (1) | — | 53 | — | 53 |
| Segment net revenues | $2,458 | $2,291 | $2,086 | $6,835 |
| Segment operating income | $1,011 | $685 | $750 | $2,446 |
|  |  | Year Ended December 31, 2017 |  |  |
|  | Activision | Blizzard | King | Total |
| Segment Revenues |  |  |  |  |
| Net revenues from external customers | $2,628 | $2,120 | $1,998 | $6,746 |
| Intersegment net revenues (1) | — | 19 | — | 19 |
| Segment net revenues | $2,628 | $2,139 | $1,998 | $6,765 |
| Segment operating income | $1,005 | $712 | $700 | $2,417 |
Paragraphs:
Information on the reportable segment net revenues and segment operating income are presented below (amounts in millions):
(1) Intersegment revenues reflect licensing and service fees charged between segments.
Question:
What is the difference in segment operating income between Activision and Blizzard in 2017?