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Litigation and contingencies (Details) - USD ($) $ in Millions | Jan. 31, 2024 | Dec. 31, 2023
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Loss Contingencies [Line Items] |  |
Amount related to unreserved tax-related matters, inclusive of interest (up to) |  | $ 119
Subsequent Event |  |
Loss Contingencies [Line Items] |  |
Loss contingency, damages sought value | $ 28 |
Loss contingency, settlement amount | $ 8 |
Elmira Site |  |
Loss Contingencies [Line Items] |  |
Environmental remediation estimated liability |  | 28
Environmental recoveries receivable |  | $ 32
Other Current Liabilities |  |
Loss Contingencies [Line Items] |  |
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] |  | Other accrued liabilities
Other Current Liabilities | Elmira Site |  |
Loss Contingencies [Line Items] |  |
Environmental remediation estimated liability |  | $ 13
Other Noncurrent Liabilities |  |
Loss Contingencies [Line Items] |  |
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] |  | Other long-term liabilities
Other Noncurrent Liabilities | Elmira Site |  |
Loss Contingencies [Line Items] |  |
Environmental remediation estimated liability |  | $ 15

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