Property, plant and equipment, net - Schedule of Property and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Oct. 31, 2022	Oct. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 684.9	$ 217.2	$ 156.1	$ 28.6
Less – accumulated depreciation	(16.1)	(7.2)	(5.9)	(2.2)
Total property, plant and equipment, net	668.8	210.0	150.2	26.4
Plant equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	55.3	38.1	34.3	6.4
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4.5	2.1	1.8	0.2
Vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	0.2	0.3	0.3	0.2
Leasehold improvement
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	13.5	9.9	9.8	6.2
Construction in progress | Rochester Hub
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	547.2	139.5	90.1	0.0
Construction in progress | Spoke Network
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	29.5	21.0	19.8	15.6
Construction in progress | Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 34.7	$ 6.3	$ 0.0	$ 0.0