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Goodwill
 9 Months Ended
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill Goodwill
 
The changes in the carrying amount of goodwill by reportable segment are as follows (amounts in millions):
 
Activision
 
Blizzard
 
King
 
Total
Balance at December 31, 2018
$
6,897

 
$
190

 
$
2,675

 
$
9,762

Other
1

 
—

 
1

 
2

Balance at September 30, 2019
$
6,898

 
$
190

 
$
2,676

 
$
9,764