Material accounting policies - Term of leases in which the Group is engaged (Details)	12 Months Ended
	Dec. 31, 2025
Vessels \| Minimum [Member]
Disclosure of quantitative information about right-of-use assets [line items]
Lease term (in years)	1 year
Vessels \| Maximum [Member]
Disclosure of quantitative information about right-of-use assets [line items]
Lease term (in years)	12 years
Containers \| Minimum [Member]
Disclosure of quantitative information about right-of-use assets [line items]
Lease term (in years)	1 year
Containers \| Maximum [Member]
Disclosure of quantitative information about right-of-use assets [line items]
Lease term (in years)	13 years
Buildings, vehicles and other assets \| Minimum [Member]
Disclosure of quantitative information about right-of-use assets [line items]
Lease term (in years)	1 year
Buildings, vehicles and other assets \| Maximum [Member]
Disclosure of quantitative information about right-of-use assets [line items]
Lease term (in years)	8 years