v3.26.1
Derivative Financial Instruments (Tables)
 6 Months Ended
Jun. 30, 2026
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Summary of Fair Value of Outstanding Derivative contracts
The fair value of the outstanding derivative contracts recorded in the balance sheet are as follows:
June 30, 2026
Copper Swap ContractsHeating Oil ContractsForeign Currency Forward
Contracts		Interest Rate Swap ContractsTotal
(Dollars in millions)
Derivative contracts$20.8 $1.7 $0.0 $0.7 $23.2 
Other assets0.0 0.4 0.0 0.0 0.4 
Accrued liabilities0.0 0.0 (0.1)(0.8)(0.9)
Other long-term liabilities(0.6)0.0 0.0 (1.1)(1.7)
Net asset (liability) on balance sheet$20.2 $2.1 $(0.1)$(1.2)$21.0 
Accumulated other comprehensive gain, net of tax$1.7 $0.0 $0.0 $0.9 $2.6 
December 31, 2025
Copper Swap ContractsHeating Oil ContractsForeign Currency Forward
Contracts		Interest Rate Swap ContractsTotal
(Dollars in millions)
Derivative contracts$31.4 $0.0 $0.0 $0.1 $31.5 
Accrued liabilities0.0 (0.4)0.0 (2.2)(2.6)
Other long-term liabilities0.0 0.0 0.0 (1.1)(1.1)
Net asset (liability) on balance sheet$31.4 $(0.4)$0.0 $(3.2)$27.8 
Accumulated other comprehensive gain (loss), net of tax$2.5 $0.0 $0.0 $(2.4)$0.1 
Summary of Unrealized (Gain) loss from Contract Where Hedge Accounting Was Not Elected
The unrealized gain (loss) from our hedging contracts is as follows:
Three Months Ended
June 30,		Six Months Ended
June 30,
2026202520262025
(Dollars in millions)
Copper swap contracts$(2.1)$0.6 $(9.4)$9.6 
Heating oil contracts(0.8)0.0 2.6 0.2 
Foreign currency forward contracts0.0 0.1 (0.1)0.6 
Summary of Outstanding Copper Swap Contracts We had outstanding copper swap contracts of the following amounts:
Units Outstanding (in Pounds)Net Fair Value – Asset
June 30, 2026December 31, 2025June 30, 2026December 31, 2025
(Amounts in millions)
Not designated as hedges26.8 25.6 $20.2 $31.4 
Summary of Net Currency Units Outstanding The net currency units outstanding for contracts were:
June 30, 2026December 31, 2025
(In millions)
Australian DollarsAUD3.2 AUD0.0 
British Pound SterlingGBP0.0 GBP0.3 
United States DollarsUSD6.0 USD9.2