v3.26.1
Accumulated Other Comprehensive Loss ("AOCL")
6 Months Ended
Jun. 30, 2026
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Loss ("AOCL")
7.    Accumulated Other Comprehensive Loss ("AOCL")
Components of AOCL:
June 30, 2026
December 31, 2025
Defined benefit plan liabilities
$(51.0)$(58.7)
Unrealized gain on financial instruments1.1 1.2 
Other comprehensive loss before income tax effect
(49.9)(57.5)
Income tax effect(1)
2.3 2.3 
Accumulated other comprehensive loss
$(47.6)$(55.2)
(1)The allocation of the income tax effect to the components of other comprehensive loss is as follows:
June 30, 2026
December 31, 2025
Defined benefit plan liabilities$2.6 $2.6 
Unrealized gain on financial instruments(0.3)(0.3)
The following table summarizes the changes in the accumulated balances for each component of AOCL:
Defined benefit plan and other postretirement liabilitiesUnrealized gain on financial instrumentsTotal, net of tax
Balance, March 31, 2026$(49.7)$1.2 $(48.5)
Other comprehensive loss before reclassifications1.5 (0.1)1.4 
Net amount reclassified to net income (loss)(0.4)(0.1)(0.5)
Balance, June 30, 2026$(48.6)$1.0 $(47.6)
Balance, March 31, 2025$(102.9)$1.3 $(101.6)
Net amount reclassified to net income (loss)1.6 (0.1)1.5 
Balance, June 30, 2025$(101.3)$1.2 $(100.1)
Balance, December 31, 2025$(56.4)$1.2 $(55.2)
Other comprehensive loss before reclassifications6.3 (0.1)6.2 
Net amount reclassified to net income (loss)1.5 (0.1)1.4 
Balance, June 30, 2026$(48.6)$1.0 $(47.6)
Balance, December 31, 2024$(104.6)$1.3 $(103.3)
Net amount reclassified to net income (loss)3.3 (0.1)3.2 
Balance, June 30, 2025$(101.3)$1.2 $(100.1)

Reclassifications out of AOCL were included in the Consolidated Statements of Operations as follows:
Three months ended
June 30,
Six months ended
June 30,
AOCL ComponentsLocation2026202520262025
Defined benefit plan and other postretirement liabilitiesCost of goods sold$0.6 $1.5 $1.7 $2.3 
Selling, general and administrative expenses— 0.1 0.1 0.3 
Other operating expense - net(1.0)— (0.3)0.7 
Income tax effect— — — — 
Net of tax$(0.4)$1.6 $1.5 $3.3 
Unrealized gain on financial instrumentsCost of goods sold$(0.1)$(0.1)$(0.1)$(0.1)
Income tax effect— — — — 
Net of tax$(0.1)$(0.1)$(0.1)$(0.1)