Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 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		12.7
Foreign currency impact		(8.9	)

Balance at September 30, 2021	$	324.2

Intangible Assets

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


	September 30, 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	$	308.4	$	(202.1	)	$	106.3	$	309.8	$	(194.6	)	$	115.2
Customer relationships		155.1		(54.6	)		100.5		148.3		(45.4	)		102.9
Trade names		15.1		(5.4	)		9.7		15.2		(4.4	)		10.8
Other		1.8		(0.6	)		1.2		0.3		(0.1	)		0.2

Intangible assets	$	480.4	$	(262.7	)	$	217.7	$	473.6	$	(244.5	)	$	229.1

For the three months ended September 30, 2021 and 2020, the Company recorded amortization expense of $9.3 million and $9.0 million, respectively, related to intangible assets subject to amortization. For the nine months ended September 30, 2021 and 2020, the Company recorded amortization expense of $27.3 million and $26.7 million, respectively, related to intangible assets subject to amortization.