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Property, plant and equipment, net - Narrative (Details)
€ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2024
EUR (€)
Sep. 30, 2023
USD ($)
Sep. 30, 2024
EUR (€)
Property, Plant and Equipment [Line Items]            
Property, plant and equipment, capitalized borrowing costs $ 0 $ 5,400,000 $ 0   $ 29,900,000  
Depreciation 4,200,000 $ 2,200,000 9,000,000.0   $ 3,900,000  
Spoke Network            
Property, Plant and Equipment [Line Items]            
Proceeds from government assistance     5,800,000 € 5.3    
Government assistance, award amount $ 6,900,000   $ 6,900,000     € 6.4