Goodwill and Other Intangible Assets (Notes)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

There were no changes in the carrying value of goodwill by reportable segment for the six months ended June 30, 2020.

The gross carrying value and accumulated amortization for each major class of intangible assets are as follows:

	June 30, 2020				December 31, 2019
(in millions)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets:
Trademarks	$	1.0	$	0.3	$	1.0	$	0.2
Patents	40.8		33.8		40.8		31.5
Customer relationships	12.0		4.4		12.0		3.6
Developed technology	36.5		3.7		36.5		0.7
Non-competition agreements	1.8		0.4		1.8		0.1
Total	92.1		42.6		92.1		36.1
Unamortized intangible assets:
Trademarks	32.0				32.0
IPR&D	3.7				3.7
Total	35.7				35.7
Total intangible assets, net	$	85.2			$	91.7

Amortization expense totaled $3.2 million and $1.7 million for the three months ended June 30, 2020 and 2019, respectively. For the six months ended June 30, 2020 and 2019, amortization expense was $6.5 million and $3.5 million, respectively. Amortization expense for the next five years, based on current intangible balances, is estimated to be as follows:

(in millions)
Q3-Q4 2020	$	6.5
2021	13.0
2022	7.7
2023	7.1
2024	7.0