7. Goodwill and Intangible Assets

Goodwill

Goodwill and changes therein were as follows for the six months ended June 30, 2018 and the year ended December 31, 2017:


Balance at December 31, 2016	$	1,933.1
Translation		27.9

Balance at December 31, 2017		1,961.0
Translation		(18.4	)

Balance at June 30, 2018	$	1,942.6

Intangible Assets

Other intangible assets consisted of the following as of June 30, 2018:


	Gross Carrying Amount		Accumulated Amortization			Net		Estimated Life Range (Years)
Customer lists and relationships	$	207.6	$	(183.6	)	$	24.0		5-15
Trade name		173.8		(2.0	)		171.8		—
Technology		153.5		(152.7	)		0.8		2-7

Total other intangible assets	$	534.9	$	(338.3	)	$	196.6

The LifeWorks Disposition was considered a triggering event for testing of the trade name intangible asset for impairment. There was no impairment indicated as of April 30, 2018. Please refer to Note 3, “Discontinued Operations,” for further discussion of the LifeWorks Disposition.

Other intangible assets consisted of the following as of December 31, 2017:


	Gross Carrying Amount		Accumulated Amortization			Net		Estimated Life Range (Years)
Customer lists and relationships	$	210.1	$	(177.0	)	$	33.1		5-15
Trade name		174.1		(2.1	)		172.0		—
Technology		155.6		(154.2	)		1.4		2-7

Total other intangible assets	$	539.8	$	(333.3	)	$	206.5

Amortization expense related to definite-lived intangible assets was $4.6 and $4.6 for the three months ended June 30, 2018, and 2017, respectively, and $9.3 and $9.2 for the six months ended June 30, 2018, and 2017, respectively.