Property, plant and equipment, net - Narrative (Details) € in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2024 EUR (€)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)
Property, Plant and Equipment [Line Items]
Property, plant and equipment, capitalized borrowing costs	$ 0		$ 9,100,000	$ 0	$ 16,800,000
Depreciation	2,600,000		$ 2,000,000.0	$ 4,800,000	$ 3,900,000
Spoke Network
Property, Plant and Equipment [Line Items]
Reduction in construction in progress	(5,800,000)	€ (5.3)
Government assistance, amount approved for grant	$ 6,900,000	€ 6.4