Derivatives and Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Millions |
6 Months Ended | |
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Jun. 30, 2025 |
Dec. 31, 2024 |
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| Derivatives Fair Value [Line Items] | ||
| Derivative asset, subject to master netting arrangement, after offset | $ 3.9 | $ 0.0 |
| Minimum [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| General term for commodity and exchange contracts | 1 month | |
| Maximum [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| General term for commodity and exchange contracts | 12 months | |
| Ryerson Credit Facility [Member] | ||
| Derivatives Fair Value [Line Items] | ||
| Credit facility terms | 30 to 90 days |
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- Definition Fair value, after effect of master netting arrangement, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and contract can be net settled by means outside contract or delivery of asset. Includes derivative subject to master netting arrangement not elected or qualified to offset. Excludes derivative not subject to master netting arrangement or similar agreement. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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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/2003/role/exampleRef
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- Definition Description of the frequency of periodic payments, which may be presented in a variety of ways (for example, monthly, quarterly, annually). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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