Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2021

6.	Goodwill and Intangible Assets

Goodwill

The following table sets forth the changes in the carrying amount of goodwill (dollars in millions):


	Total
Balance at December 31, 2020	$	320.4
Current period additions/adjustments		(0.3	)
Foreign currency impact		(6.8	)

Balance at March 31, 2021	$	313.3

Intangible Assets

The following is a summary of intangible assets, excluding goodwill (dollars in millions):


	March 31, 2021							December 31, 2020
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Existing technology and related patents	$	299.0	$	(192.3	)	$	106.7	$	309.8	$	(194.6	)	$	115.2
Customer relationships		144.4		(48.0	)		96.4		148.3		(45.4	)		102.9
Trade names		14.8		(4.7	)		10.1		15.2		(4.4	)		10.8
Other		0.3		(0.1	)		0.2		0.3		(0.1	)		0.2

Intangible assets	$	458.5	$	(245.1	)	$	213.4	$	473.6	$	(244.5	)	$	229.1

For the three months ended March 31, 2021 and 2020, the Company recorded amortization expense of $8.9 million and $8.7 million, respectively, related to intangible assets subject to amortization.