Financial Instruments and Fair Value Measurements - Carrying value and estimated fair value of non-derivative financial instruments (Details) - USD ($) $ in Millions |
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Estimated fair value and carrying value of non-derivative financial instruments [Line Items] | ||
| Precious metal financings, carrying value | $ 234 | $ 226 |
| Nonrecurring | Non-derivatives: | ||
| Estimated fair value and carrying value of non-derivative financial instruments [Line Items] | ||
| Precious metal financings, carrying value | 234 | 226 |
| Long-term debt, carrying value | 11,204 | 12,113 |
| Total liabilities, carrying value | 11,438 | 12,339 |
| Precious metal financings, fair value | 216 | 263 |
| Long-term debt, fair value | 9,602 | 10,501 |
| Total liabilities, fair value | $ 9,818 | $ 10,764 |
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- Definition Carrying value of financial and nonfinancial obligations. 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/disclosureRef
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- Definition Fair value of financial and nonfinancial obligations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount of short-term debt existing as of the balance sheet date. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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