Percentage Of Forecasted Natural Gas Usage Hedged for Year 3

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Percentage Of Forecasted Natural Gas Usage Hedged for Year 1

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Aggregate notional amount of price risk derivatives for instruments with notional amounts expressed in percentage of estimated annual domestic (U.S.) usage

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Aggregate notional amount of price risk derivatives for instruments with notional amounts expressed in percentage of annual estimated usage in production

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Nominal mass used to calculate payments on a derivative instrument.

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Nominal or face amount used to calculate payment on derivative.

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Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Derivative Financial Instruments and Hedging (Details) € in Millions, lb in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) lb	Sep. 30, 2021 USD ($)	Sep. 30, 2022 EUR (€)	Sep. 30, 2022 USD ($)
Derivative Instruments Gain Loss [Line Items]
Percentage of estimated annual nickel requirements			11.00%
Percentage Of Forecasted Natural Gas Usage Hedged for 2022			75.00%
Percentage Of Forecasted Natural Gas Usage Hedged for 2023			50.00%
Percentage Of Forecasted Natural Gas Usage Hedged for 2024			15.00%
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract]
Cash Flow Hedge Gain (Loss) To Be Reclassified Within Twelve Months			$ 11.8
Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Net derivative gain (loss) on hedge transactions	$ 5.8	$ 5.2	36.8	$ 10.6
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	5.4	2.3	$ 24.7	4.7
Nickel
Derivative Instruments Gain Loss [Line Items]
Notional amount of nickel hedge (in pounds of nickel) \| lb			6
Interest Rate Swap \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Net derivative gain (loss) on hedge transactions	0.6	(0.2)	$ 2.1	(0.1)
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	0.0	(0.2)	(0.3)	(0.6)
Nickel and other raw material contracts \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Net derivative gain (loss) on hedge transactions	(0.7)	(0.2)	16.6	2.6
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	0.8	1.5	15.3	4.1
Natural gas contracts \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Net derivative gain (loss) on hedge transactions	5.4	5.6	17.2	8.0
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	4.1	1.0	9.1	1.2
Foreign exchange contracts \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Net derivative gain (loss) on hedge transactions	0.5	0.0	0.9	0.1
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net	$ 0.5	$ 0.0	$ 0.6	$ 0.0
Designated as Hedging Instrument \| Foreign exchange forward \| Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Notional amount of derivative \| €					€ 0
2027 Term Loan
Derivative Instruments Gain Loss [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					4.21%	4.21%
2027 Term Loan \| Interest Rate Swap
Derivative Instruments Gain Loss [Line Items]
Notional amount of derivative						$ 50.0