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Investments - Narrative (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2026 USD ($) joint_venture | Dec. 31, 2025 USD ($)
Schedule of Equity Method Investments [Line Items] |  |
Equity method investments | $ 168 | $ 162
Equity method investments, number of joint ventures | joint_venture | 3 |
Asahi-Schwebel JV |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity method investment, ownership percentage | 49.00% |
Quimobásicos JV |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity method investment, ownership percentage | 49.00% |
Sinochem Lantian New Materials Co., Ltd. |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity method investments | $ 107 | $ 103
Equity method investment, ownership percentage | 50.00% |
ConverDyn | ConverDyn | Variable Interest Entity, Primary Beneficiary |  |
Schedule of Equity Method Investments [Line Items] |  |
Variable interest entity, qualitative or quantitative information, ownership percentage | 50.00% |

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