Accumulated Other Comprehensive Loss ("AOCL") (Tables)

3 Months Ended

Mar. 31, 2026

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of Accumulated Balances for Each Component of AOCI

Components of AOCL:	March 31, 2026		December 31, 2025
Defined benefit plan liabilities	$	(51.9)	$	(58.7)
Unrealized gain on financial instruments	1.1		1.2
Other comprehensive loss before income tax effect	(50.8)		(57.5)
Income tax effect(1)	2.3		2.3
Accumulated other comprehensive loss	$	(48.5)	$	(55.2)

(1)The allocation of the income tax effect to the components of other comprehensive loss is as follows:

	March 31, 2026		December 31, 2025
Defined benefit plan liabilities	$	2.6	$	2.6
Unrealized gain on financial instruments	(0.3)		(0.3)

The following table summarizes the changes in the accumulated balances for each component of AOCL:

	Defined benefit plan and other postretirement liabilities		Unrealized gain on financial instruments		Total, net of tax
Balance, December 31, 2025	$	(56.4)	$	1.2	$	(55.2)
Other comprehensive loss before reclassifications	4.8		—		4.8
Net amount reclassified to net income (loss)	1.9		—		1.9
Balance, March 31, 2026	$	(49.7)	$	1.2	$	(48.5)
Balance, December 31, 2024	$	(104.6)	$	1.3	$	(103.3)
Other comprehensive loss before reclassifications	—		—		—
Net amount reclassified to net income (loss)	1.7		—		1.7
Balance, March 31, 2025	$	(102.9)	$	1.3	$	(101.6)

Schedule of Reclassification Out of AOCI

Reclassifications out of AOCL were included in the Consolidated Statements of Operations as follows:

		Three months ended March 31,
AOCL Components	Location	2026		2025
Defined benefit plan and other postretirement liabilities	Cost of goods sold	$	1.1	$	0.8
	Selling, general and administrative expenses	0.1		0.2
	Other operating expense - net	0.7		0.7
	Income tax effect	—		—
	Net of tax	$	1.9	$	1.7
Unrealized gain on financial instruments	Cost of goods sold	$	—	$	—
	Income tax effect	—		—
	Net of tax	$	—	$	—