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Operating expenses and cost of services (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Operating expenses and cost of services      
Wages, maintenance and other vessel operating costs $ 34.5 $ 14.3 $ 13.0
Expenses relating to fleet equipment (mainly containers and chassis) 29.1 28.1 26.6
Fuel and lubricants 1,434.8 739.8 361.6
Insurance 15.2 11.5 9.6
Expenses related to cargo handling 1,981.6 1,879.9 1,432.9
Port expenses 359.0 255.5 206.9
Agents' salaries and commissions 261.1 238.8 159.1
Cost of related services and sundry 216.1 170.9 100.5
Slots purchase and hire of vessels 398.8 530.5 497.9
Hire of containers 34.3 36.6 27.0
Total operating expenses and cost of services $ 4,764.5 $ 3,905.9 $ 2,835.1