Revenue and Contracts in Process - Schedule of Spectrum Segment Disaggregation of Revenue (Details) - Spectrum - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total Spectrum segment revenue	$ 25.7	$ 22.5
Broadcast station
Segment Reporting Information [Line Items]
Total Spectrum segment revenue	25.7	21.9
Other
Segment Reporting Information [Line Items]
Total Spectrum segment revenue	$ 0.0	$ 0.6