Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 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	51.2		—		51.2
Amounts reclassified from accumulated other comprehensive loss	—		0.2		0.2
Other comprehensive income (loss)	51.2		0.2		51.4
Balance as of June 30, 2025	$	(35.5)	$	(8.4)	$	(43.9)
Balance as of December 31, 2023	$	(56.8)	$	(9.6)	$	(66.4)
Other comprehensive income (loss) before reclassifications	(14.9)		—		(14.9)
Amounts reclassified from accumulated other comprehensive loss	—		0.2		0.2
Other comprehensive income (loss)	(14.9)		0.2		(14.7)
Balance as of June 30, 2024	$	(71.7)	$	(9.4)	$	(81.1)

(1) Net of taxes of $1.4 million and $1.5 million as of June 30, 2025 and December 31, 2024, respectively. Net of taxes of $1.7 million and $1.8 million as of June 30, 2024 and December 31, 2023, respectively.