Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the net carrying amount of goodwill by operating segment were as follows:

(Dollars in millions)	Advanced Electronics Solutions		Elastomeric Material Solutions		Other		Total
December 31, 2023	$	117.7	$	239.9	$	2.2	$	359.8
Foreign currency translation adjustment	(2.1)		(1.4)		—		$	(3.5)
June 30, 2024	$	115.6	$	238.5	$	2.2	$	356.3

Schedule of Intangible Assets

The carrying amount of other intangible assets were as follows:

	June 30, 2024						December 31, 2023
(Dollars in millions)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Customer relationships	$	176.9	$	93.0	$	83.9	$	177.9	$	90.0	$	87.9
Technology	76.5		59.4		17.1		77.4		58.1		19.3
Trademarks and trade names	19.3		7.5		11.8		19.4		7.4		12.0
Covenants not to compete	1.3		1.1		0.2		1.3		0.9		0.4
Total definite-lived other intangible assets	274.0		161.0		113.0		276.0		156.4		119.6
Indefinite-lived other intangible asset	4.2		—		4.2		4.3		—		4.3
Total other intangible assets	$	278.2	$	161.0	$	117.2	$	280.3	$	156.4	$	123.9

Schedule of Weighted Average Amortization Period, by Intangible Asset Class

The weighted average amortization period as of June 30, 2024, by definite-lived other intangible asset class, is presented in the table below:

	Weighted Average Remaining Amortization Period
Customer relationships	7.2 years
Technology	3.2 years
Trademarks and trade names	9.6 years
Covenants not to compete	0.3 years
Total definite-lived other intangible assets	6.8 years