The following is a summary of the activity in the other intangible assets balance for the six months ended June 30, 2014 (in millions):



Other intangible assets balance at December 31, 2013	$	9,404
Acquisition	39
Foreign currency translation	9
De-consolidation of Euronext and reclassification of other intangible assets relating to discontinued operations (Note 13)	(1,472		)
Other activity, net	59
Amortization of other intangible assets	(82		)
Other intangible assets balance at June 30, 2014	$	7,957

The following is a summary of the activity in the goodwill balance for the six months ended June 30, 2014 (in millions):



Goodwill balance at December 31, 2013	$	9,501
Acquisition	101
Foreign currency translation	90
De-consolidation of Euronext and reclassification of goodwill relating to discontinued operations (Note 13)	(1,058		)
Other activity, net	(51		)
Goodwill balance at June 30, 2014	$	8,583