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Pension and other postretirement benefits - Schedule of Weighted Average Assumptions Used to Determine Benefit Obligation (Details)	Dec. 31, 2024	Dec. 31, 2023
Pension Plans | United States
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.55%	4.95%
Pension Plans | Non-U.S.
Defined Benefit Plan Disclosure [Line Items]
Discount rate	3.41%	3.49%
Rate of compensation increase	2.88%	3.22%
OPEB Plans (i)
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.34%	4.86%
Rate of compensation increase	2.33%	2.75%

X

- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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X

- Definition

Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

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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.

+ References

No definition available.

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