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Summary of material accounting policies (Tables)
 12 Months Ended
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