The changes in the carrying amount of goodwill by operating segment for the years ended December 31, 2016 and 2015, are as follows (amounts in millions):
 
Activision
 
Blizzard
 
King
 
Other
 
Total
Balance at December 31, 2014
$
6,908

 
$
178

 
$
—

 
$
—

 
$
7,086

Additions through acquisition
—

 
—

 
—

 
12

 
12

Other
(3
)
 
—

 
—

 
—

 
(3
)
Balance at December 31, 2015
$
6,905

 
$
178

 
$
—

 
$
12

 
$
7,095

Additions through acquisition
—

 
—

 
2,675

 
—

 
2,675

Other
(2
)
 
—

 
—

 
—

 
(2
)
Balance at December 31, 2016
$
6,903

 
$
178

 
$
2,675

 
$
12

 
$
9,768