Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

6. Goodwill and Intangible Assets

Goodwill

Goodwill and changes therein were as follows for the three months ended March 31, 2019, and the year ended December 31, 2018:

Balance at December 31, 2017	$	1,961.0
Translation		(33.6	)
Balance at December 31, 2018		1,927.4
Asset acquisition		9.0
Translation		8.5
Balance at March 31, 2019	$	1,944.9

Intangible Assets

Other intangible assets consisted of the following as of March 31, 2019:

	Gross Carrying Amount		Accumulated Amortization			Net		Estimated Life Range (Years)
Customer lists and relationships	$	206.8	$	(195.7	)	$	11.1	5-15
Trade name		173.7		(1.9	)		171.8		—
Technology		154.1		(152.7	)		1.4	3-4
Total other intangible assets	$	534.6	$	(350.3	)	$	184.3

We perform an impairment assessment of our trade name intangible assets as of October 1 of each year. We continue to evaluate the use of our trade names and branding in our sales and marketing efforts. If there is a fundamental shift in the method of our branding in the future, we will assess the impact on the carrying amount of our trade name intangible assets and to determine whether an impairment exists. If it is determined that an impairment has occurred, a non-cash expense would be recognized during the period in which the decision was made to make the fundamental shift.

Other intangible assets consisted of the following as of December 31, 2018:

	Gross Carrying Amount		Accumulated Amortization			Net		Estimated Life Range (Years)
Customer lists and relationships	$	205.4	$	(190.2	)	$	15.2	5-15
Trade name		173.5		(1.9	)		171.6		—
Technology		152.2		(151.5	)		0.7	3-4
Total other intangible assets	$	531.1	$	(343.6	)	$	187.5

Amortization expense related to definite-lived intangible assets was $4.7 and $4.7 for the three months ended March 31, 2019, and 2018, respectively.