Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Changes in carrying amount of goodwill
Goodwill, balance at beginning of period	$ 9,765	$ 9,764
Additions through acquisition	34
Other		1
Goodwill, balance at end of period	9,799	9,765
Activision
Changes in carrying amount of goodwill
Goodwill, balance at beginning of period	6,899	6,898
Additions through acquisition	34
Other		1
Goodwill, balance at end of period	6,933	6,899
Blizzard
Changes in carrying amount of goodwill
Goodwill, balance at beginning of period	190	190
Additions through acquisition	0
Other		0
Goodwill, balance at end of period	190	190
King
Changes in carrying amount of goodwill
Goodwill, balance at beginning of period	2,676	2,676
Additions through acquisition	0
Other		0
Goodwill, balance at end of period	$ 2,676	$ 2,676