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Property, Equipment, Network Under Construction, and Intangible Assets (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Abstract]    
Depreciation expense on property and equipment $ 1.5 $ 0.1
Total balances 0.5 16.8
Amortization expense $ 0.3 $ 0.1