Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Changes in carrying amount of goodwill
Goodwill, balance at beginning of period	$ 7,086	$ 7,092
Goodwill	12
Tax benefit credited to goodwill	(2)	(5)
Foreign exchange	(1)	(1)
Goodwill, balance at end of period	7,095	7,086
Goodwill, Impaired, Accumulated Impairment Loss	0	0
Activision
Changes in carrying amount of goodwill
Goodwill, balance at beginning of period	6,908	6,914
Goodwill	0
Tax benefit credited to goodwill	(2)	(5)
Foreign exchange	(1)	(1)
Goodwill, balance at end of period	6,905	6,908
Blizzard
Changes in carrying amount of goodwill
Goodwill, balance at beginning of period	178	178
Goodwill	0
Tax benefit credited to goodwill	0	0
Foreign exchange	0	0
Goodwill, balance at end of period	178	178
Other
Changes in carrying amount of goodwill
Goodwill, balance at beginning of period	0	0
Goodwill	12
Tax benefit credited to goodwill	0	0
Foreign exchange	0	0
Goodwill, balance at end of period	$ 12	$ 0