GOODWILL AND OTHER INTANGIBLE ASSETS

9 Months Ended

Sep. 30, 2018

As of September 30, 2018 and December 31, 2017, goodwill and other intangible assets consisted of the following:



	September 30, 2018		December 31, 2017

	(in thousands)

Goodwill	$	6,130,921	$	5,703,992
Other intangible assets:
Customer-related intangible assets	$	2,123,046	$	2,078,891
Acquired technologies	1,027,842		722,466
Trademarks and trade names	245,814		247,688
Contract-based intangible assets	137,097		171,522
	3,533,799		3,220,567
Less accumulated amortization:
Customer-related intangible assets	806,204		685,869
Acquired technologies	310,705		210,063
Trademarks and trade names	73,977		50,849
Contract-based intangible assets	63,945		92,079
	1,254,831		1,038,860
	$	2,278,968	$	2,181,707

The following table sets forth the changes in the carrying amount of goodwill for the nine months ended September 30, 2018:



	North America			Europe			Asia-Pacific			Total

	(in thousands)

Balance at December 31, 2017	$	4,896,491		$	513,138		$	294,363		$	5,703,992
Goodwill acquired	468,798			—			—			468,798
Effect of foreign currency translation	(1,891		)	(20,063		)	(19,491		)	(41,445		)
Measurement-period adjustments	(424		)	—			—			(424		)
Balance at September 30, 2018	$	5,362,974		$	493,075		$	274,872		$	6,130,921

There was no accumulated impairment loss as of September 30, 2018 or December 31, 2017.