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Derivative Financial Instruments and Hedging - Narrative (Details) € in Millions, lb in Millions, $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($) lb	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Percentage of estimated annual nickel requirements		10.00%
Derivative [Line Items]
Tax expense for the recognition of a stranded deferred tax balance arising from deferred tax valuation allowances that was associated with a cash flow hedge portfolio	$ 6.0
Pre-tax cash flow hedge gain (loss) to be reclassified within twelve months		$ 5.2
Nickel [Member]
Derivative [Line Items]
Derivative notional amount (in pounds of nickel) | lb		5
Cash Flow Hedging [Member] | Natural gas contracts [Member] | Designated as Hedging Instrument [Member]
Derivative [Line Items]
Percentage Of Forecasted Natural Gas Usage Hedged for 2022		70.00%
Percentage of forecasted natural gas usage hedged for 2023		35.00%
Percentage of Forecasted Natural Gas Usage hedged for 2024		5.00%
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Maturity Dates Through 2021 [Member]
Derivative [Line Items]
Derivative notional amount | €			€ 0
Term Loan due 2024
Derivative [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			4.21%	4.21%
Term Loan due 2024 | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative notional amount				$ 50.0

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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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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of tax expense (benefit) for reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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