Accumulated Other Comprehensive Loss (Tables)

3 Months Ended

Mar. 31, 2025

Equity [Abstract]

Schedule of Accumulated Balances Related to Each Component of Accumulated Other Comprehensive Income (Loss)

The changes in accumulated other comprehensive loss by component were as follows:

(Dollars in millions)	Foreign Currency Translation Adjustments		Pension and Other Postretirement Benefits(1)		Total
Balance as of December 31, 2024	$	(86.7)	$	(8.6)	$	(95.3)
Other comprehensive income (loss) before reclassifications	17.6		—		17.6
Amounts reclassified from accumulated other comprehensive loss	—		0.1		0.1
Other comprehensive income (loss)	17.6		0.1		17.7
Balance as of March 31, 2025	$	(69.1)	$	(8.5)	$	(77.6)
Balance as of December 31, 2023	$	(56.8)	$	(9.6)	$	(66.4)
Other comprehensive income (loss) before reclassifications	(9.2)		—		(9.2)
Amounts reclassified from accumulated other comprehensive loss	—		0.1		0.1
Other comprehensive income (loss)	(9.2)		0.1		(9.1)
Balance as of March 31, 2024	$	(66.0)	$	(9.5)	$	(75.5)

(1) Net of taxes of $1.5 million for both March 31, 2025 and December 31, 2024, respectively. Net of taxes of $1.8 million for both March 31, 2024 and December 31, 2023, respectively.