Litigation and contingencies (Details) - USD ($) $ in Millions	Jan. 31, 2024	Dec. 31, 2023
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