Goodwill (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill by operating segments

The changes in the carrying amount of goodwill by operating segment are as follows (amounts in millions):

	Activision			Blizzard (1)		King		Total
Balance at December 31, 2015	$	6,905		$	190	$	—	$	7,095
Additions through acquisition	—			—		2,675		2,675
Other	(2		)	—		—		(2		)
Balance at December 31, 2016	$	6,903		$	190	$	2,675	$	9,768
Other	(5		)	—		—		(5		)
Balance at December 31, 2017	$	6,898		$	190	$	2,675	$	9,763

(1) As a result of the change in our operating segments discussed in Note 1, goodwill of $12 million previously reported within the “Other segments” is now included in the “Blizzard” reportable segment. The prior period balance has been revised to reflect this change.