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Derivative Financial Instruments and Hedging (Details) € in Millions, lb in Millions, $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 29, 2024 USD ($) | Oct. 01, 2023 USD ($) | Sep. 29, 2024 USD ($) lb | Oct. 01, 2023 USD ($) | Sep. 29, 2024 EUR (€) | Mar. 31, 2024 USD ($)
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Percentage of estimated annual nickel requirements |  |  | 6.00% |  |  |
Percentage Of Forecasted Natural Gas Usage Hedged for 2024 |  |  | 85.00% |  |  |
Percentage Of Forecasted Natural Gas Usage Hedged for 2025 |  |  | 55.00% |  |  |
Percentage Of Forecasted Natural Gas Usage Hedged for 2026 |  |  | 10.00% |  |  |
Reclassification of Cash Flow Hedge Gain (Loss) [Abstract] |  |  |  |  |  |
Cash Flow Hedge Gain (Loss) To Be Reclassified Within Twelve Months |  |  | $ (5.1) |  |  |
Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net | $ (2.8) | $ (1.4) | (6.1) | $ (0.1) |  |
Cash Flow Hedging | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Net derivative gain (loss) on hedge transactions | (1.5) | (2.4) | $ (3.3) | (15.7) |  |
Nickel |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Notional amount of nickel hedge (in pounds of nickel) | lb |  |  | 4 |  |  |
Interest Rate Swap | Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net | 0.0 | 0.3 | $ 1.2 | 0.8 |  |
Interest Rate Swap | Cash Flow Hedging | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Net derivative gain (loss) on hedge transactions | 0.0 | 0.1 | 0.0 | 0.3 |  |
Nickel and other raw material contracts | Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net | (1.4) | (0.4) | (2.5) | 3.5 |  |
Nickel and other raw material contracts | Cash Flow Hedging | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Net derivative gain (loss) on hedge transactions | (0.2) | (1.6) | (1.3) | (8.5) |  |
Natural gas contracts | Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net | (1.4) | (1.4) | (5.0) | (4.6) |  |
Natural gas contracts | Cash Flow Hedging | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Net derivative gain (loss) on hedge transactions | (1.1) | (1.0) | (2.1) | (7.8) |  |
Foreign exchange contracts | Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Derivative Instruments Gain Loss Reclassified From Accumulated OCI Into Income Effective Portion Net | 0.0 | 0.1 | 0.2 | 0.2 |  |
Foreign exchange contracts | Cash Flow Hedging | Other Comprehensive Income (Loss) [Member] |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Net derivative gain (loss) on hedge transactions | (0.2) | $ 0.1 | 0.1 | $ 0.3 |  |
Designated as Hedging Instrument | Foreign exchange forward | Cash Flow Hedging |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Notional amount of derivative | € |  |  |  |  | € 0 |
Not Designated as Hedging Instrument | Foreign exchange forward |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Derivative Instruments Gain Loss Recognized In Income Net | $ 1.0 |  | $ 0.5 |  |  |
2027 Term Loan |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  | 4.21%
2027 Term Loan | Interest Rate Swap |  |  |  |  |  |
Derivative Instruments Gain Loss [Line Items] |  |  |  |  |  |
Notional amount of derivative |  |  |  |  |  | $ 50.0

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