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Goodwill and Other Intangible Assets (Tables)
9 Months Ended
Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedules of Intangible Assets and Goodwill
The following is a summary of the activity in the goodwill balance for the nine months ended September 30, 2019 (in millions):
Goodwill balance at December 31, 2018
$
13,085

Acquisitions
235

Foreign currency translation
(12
)
Other activity, net
2

Goodwill balance at September 30, 2019
$
13,310


The following is a summary of the activity in the other intangible assets balance for the nine months ended September 30, 2019 (in millions):
Other intangible assets balance at December 31, 2018
$
10,462

Acquisitions
116

Foreign currency translation
(13
)
Amortization of other intangible assets
(235
)
Other intangible assets balance at September 30, 2019
$
10,330