Derivative Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Schedule of Outstanding Copper Swap Contracts

As of March 31, 2020 and December 31, 2019, we had outstanding copper swap contracts of the following amounts:

	Units Outstanding (in Pounds)				Net Fair Value - (Liability) Asset
	March 31, 2020		December 31, 2019		March 31, 2020			December 31, 2019
(Amounts in millions)
Cash flow hedges		73.7		56.5	$	(28.9	)	$	4.5
Not designated as hedges		16.5		16.6		(6.1	)		1.7
Total		90.2		73.1	$	(35.0	)	$	6.2

Schedule of Fair Value of Outstanding Copper Swap Contracts Recorded in Balance Sheet

As of March 31, 2020 and December 31, 2019, the fair value of the outstanding copper swap contracts is recorded in the balance sheet as follows:

	March 31, 2020			December 31, 2019
(Dollars in millions)
Other current assets	$	0.0		$	2.1
Other assets		0.0			4.1
Accrued liabilities		(19.3	)		0.0
Other long-term liabilities		(15.7	)		0.0
Net (liability) asset on balance sheet	$	(35.0	)	$	6.2
Accumulated other comprehensive (loss) gain, net of tax	$	(22.2	)	$	3.3

Schedule of (Loss) Gain from Contract Not Designated as Hedges

For the three months ended March 31, 2020 and 2019, the (loss) gain from contracts not designated as hedges is as follows:

	Three Months Ended March 31,
	2020			2019
(Dollars in millions)
(Loss) gain from contracts not designated as hedges	$	(8.0	)	$	3.1

Schedule of Fair Value of Outstanding Foreign Currency Forward Contracts

As of March 31, 2020 and December 31, 2019, the fair value of outstanding foreign currency forward contracts is recorded in the balance sheet as follows:

	March 31, 2020			December 31, 2019
(Dollars in millions)
Other current assets	$	1.6		$	0.3
Accrued liabilities		(0.3	)		(0.5	)
Net asset (liability) on balance sheet	$	1.3		$	(0.2	)

Summary of Net Currency Units Outstanding

As of March 31, 2020 and December 31, 2019, the net currency units outstanding for these contracts were:

	March 31, 2020		December 31, 2019
(In millions)
British Pounds		GBP 3.7		GBP 3.7
New Zealand Dollars		NZD 16.0		NZD 16.0
United States Dollars		USD 2.8		USD 6.2
Euro		EUR 1.2		EUR 1.2