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Other (Income) Expense - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Other (Income) Expense [Line Items] |  |  |  |
Pension settlement (credit) charge | $ 68 |  | $ 72 | $ (5)
Net foreign currency exchange gains (losses) | (6) | $ 0 | (12) | 3
Royalty and other income | 17 | 5 | 43 | 16
Other Expense | 91 | 36 | 147 | 95
OTR |  |  |  |
Other (Income) Expense [Line Items] |  |  |  |
Royalty and other income | 4 |  | 17 |
Royalty income | 13 |  | 26 |
Turkish lira |  |  |  |
Other (Income) Expense [Line Items] |  |  |  |
Net foreign currency exchange gains (losses) | (5) | (5) | (17) | (7)
Euro |  |  |  |
Other (Income) Expense [Line Items] |  |  |  |
Net foreign currency exchange gains (losses) | 1 | (3) | 5 | 2
Miscellaneous (Income) Expense | OTR |  |  |  |
Other (Income) Expense [Line Items] |  |  |  |
Other Expense |  | $ 11 |  | 11
Miscellaneous (Income) Expense | Chemical Business |  |  |  |
Other (Income) Expense [Line Items] |  |  |  |
Other Expense | $ 4 |  | $ 7 |
Miscellaneous (Income) Expense | Argentina |  |  |  |
Other (Income) Expense [Line Items] |  |  |  |
Other Expense |  |  |  | $ 8

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