Goodwill (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Goodwill [Roll Forward]
Balance at December 31, 2019	$ 9,764
Other	(1)
Balance at June 30, 2020	9,763
Activision
Goodwill [Roll Forward]
Balance at December 31, 2019	6,898
Other	(1)
Balance at June 30, 2020	6,897
Blizzard
Goodwill [Roll Forward]
Balance at December 31, 2019	190
Other	0
Balance at June 30, 2020	190
King
Goodwill [Roll Forward]
Balance at December 31, 2019	2,676
Other	0
Balance at June 30, 2020	$ 2,676