Changes in the carrying amounts of goodwill were as follows (in millions):
 
During the years ended December 31,
 
2016
 
2015
Beginning balance
$
14,787

 
$
14,788

Goodwill related to acquisitions of businesses (1)
2

 
108

Currency translation adjustments
(38
)
 
(109
)
Ending balance
$
14,751

 
$
14,787


(1) 
Consists of goodwill recognized on the acquisition dates of business combinations and subsequent adjustments to these amounts resulting from changes to the acquisition date fair values of net assets acquired in the business combinations recorded during their respective measurement periods.