Financial Instruments and Commodity Contracts - Summary of Notional Amount (Details) - Metal Contracts - kt kt in Thousands |
Dec. 31, 2025 |
Mar. 31, 2025 |
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| Derivative [Line Items] | ||
| Derivative, nonmonetary notional amount | 1,235,000 | 982,000 |
| Designated as Hedging Instrument | Cash flow hedges | Short | ||
| Derivative [Line Items] | ||
| Derivative, nonmonetary notional amount | 1,024,000 | 847,000 |
| Not Designated as Hedging Instrument | ||
| Derivative [Line Items] | ||
| Derivative, nonmonetary notional amount | 211,000 | 135,000 |
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- Definition 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Nominal number of units used to calculate payment on derivative. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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