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Summary of material accounting policies (Tables) | 12 Months Ended
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Dec. 31, 2024
Summary of material accounting policies |
Schedule of estimated useful lives of intangible assets | ​
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Computer software |  | 2 – 7 years
Customer relationships |  | 5 – 15 years
Technology |  | 5 – 15 years
Schedule of estimated useful lives of property and equipment | ​
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Buildings |  | 20 – 40 years
Plant, machinery and other |  | 3 – 20 years
Dunnage and other |  | 3 – 10 years

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