Contingencies and Guaranty - Schedule of Spectrum Sale Agreements (Details) - Licensing Agreements $ in Millions	1 Months Ended			3 Months Ended	18 Months Ended	39 Months Ended	65 Months Ended
	Jan. 31, 2025 USD ($)	Apr. 30, 2023 USD ($)	Feb. 28, 2021 USD ($)	Jun. 30, 2026 USD ($) license	Jun. 30, 2026 USD ($)	Jun. 30, 2026 USD ($) license	Jun. 30, 2026 USD ($) license
San Diego Gas & Electric (“SDG&E”) Agreement
Other Commitments [Line Items]
Total Consideration			$ 50.0
Payments Received							$ 45.6
Payments remaining				$ 3.1	$ 3.1	$ 3.1	$ 3.1
Broadband license(s) delivered \| license							2
Broadband license(s) remaining \| license				1
LCRA Agreement
Other Commitments [Line Items]
Total Consideration		$ 30.0
Payments Received						29.3
Payments remaining				$ 0.7	0.7	$ 0.7	$ 0.7
Broadband license(s) delivered \| license						64
Broadband license(s) remaining \| license				4
LCRA Expansion Agreement
Other Commitments [Line Items]
Total Consideration	$ 13.5
Payments Received					6.0
Payments remaining				$ 6.5	6.5	$ 6.5	6.5
Broadband license(s) delivered \| license						0
Broadband license(s) remaining \| license				34
Customer credit				$ 1.0	$ 1.0	$ 1.0	$ 1.0