Supplemental Financial Information (Tables)

12 Months Ended

Dec. 31, 2023

Supplemental Income Statement Elements [Abstract]

Schedule of Restructuring and Impairment Charges

The components of the “Restructuring and impairment charges” line item in the consolidated statements of operations were as follows:

	Years Ended December 31,
(Dollars in millions)	2023		2022		2021
Restructuring charges
Global workforce reduction	$	8.8	$	—	$	—
Facility consolidations	8.1		0.4		—
Manufacturing footprint optimization	—		1.1		3.1
Total restructuring charges	16.9		1.5		3.1
Impairment charges
Fixed assets impairment charges	—		47.2		0.5
Other impairment charges	—		17.9		—
Total impairment charges	—		65.1		0.5
Total restructuring and impairment charges	$	16.9	$	66.6	$	3.6

The following table summarizes the allocation of restructuring and impairment charges to our operating segments:

	Years Ended December 31,
(Dollars in millions)	2023		2022		2021
Advanced Electronics Solutions
Allocated restructuring charges	$	10.7	$	1.1	$	3.0
Allocated impairment charges	—		40.5		0.5
Elastomeric Material Solutions
Allocated restructuring charges	6.2		0.4		0.1
Allocated impairment charges	—		24.6		—
Total restructuring and impairment charges	$	16.9	$	66.6	$	3.6

Schedule of Restructuring and Related Costs

(Dollars in millions)	Global Workforce Reduction Restructuring Severance and Related Benefits
Balance as of December 31, 2022	$	—
Provisions	8.5
Payments	(8.6)
Foreign currency translation adjustment	0.1
Balance as of December 31, 2023	$	—

Schedule of Components of Other Operating (Income) Expense, Net

The components of the “Other operating (income) expense, net” line item in the consolidated statements of operations were as follows:

	Years Ended December 31,
(Dollars in millions)	2023		2022		2021
UTIS fire
Fixed assets write-offs	$	—	$	—	$	1.1
Inventory charges	—		0.2		0.9
Professional services	0.9		1.4		2.7
Lease obligations	—		0.4		1.0
Lease impairments	—		—		0.5
Compensation & benefits	—		2.4		2.1
Third-party property claims	—		—		4.7
Other	—		(0.2)		0.1
Insurance recoveries	(31.4)		(6.6)		(6.9)
Total UTIS fire	(30.5)		(2.4)		6.2
Regulatory termination fee, net	—		(142.1)		—
Loss (gain) on sale or disposal of property, plant and equipment	(2.6)		0.5		(0.9)
Total other operating (income) expense, net	$	(33.1)	$	(144.0)	$	5.3

Schedule of Components of Interest Expense, Net

The components of the “Interest expense, net” line item in the consolidated statements of operations were as follows:

	Years Ended December 31,
(Dollars in millions)	2023		2022		2021
Interest on revolving credit facility	$	9.6	$	9.0	$	0.9
Line of credit fees	0.8		0.5		1.1
Debt issuance amortization costs	0.7		0.7		0.7
Interest income	(1.2)		(0.7)		(0.5)
Other	0.2		—		0.4
Total interest expense, net	$	10.1	$	9.5	$	2.5