Goodwill and Intangibles, Net (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of the Changes in the Carrying Amount of Goodwill by Reporting Unit

The carrying amounts of goodwill by segment were as follows (in millions):

	Infrastructure		Spectrum		Total
Balance at December 31, 2022	$	105.7	$	21.4	$	127.1
Translation adjustments	—		—		—
Balance as of December 31, 2023	$	105.7	$	21.4	$	127.1
Translation adjustments	(0.4)		—		(0.4)
Balance as of December 31, 2024	$	105.3	$	21.4	$	126.7

Schedule of Indefinite-Lived Intangible Assets

The carrying amounts of indefinite-lived intangible assets were as follows (in millions):

	December 31,
	2024		2023
FCC licenses	$	107.7	$	106.3
Total	$	107.7	$	106.3

Schedule of Intangible Assets Subject to Amortization

The gross carrying amounts and accumulated amortization of definite lived intangible assets by major intangible asset class were as follows (in millions):

	Weighted-Average Original Useful Life	December 31, 2024
		Gross Carrying Amount		Accumulated Amortization			Net
Trade names	15 years	$	25.1		$	(11.0)	$	14.1
Customer relationships and contracts	11 years	87.4			(49.1)		38.3
Channel sharing arrangements	35 years	12.6			(2.2)		10.4
Other	10 years	3.9			(2.0)		1.9
Total		$	129.0		$	(64.3)	$	64.7

	Weighted-Average Original Useful Life	December 31, 2023
		Gross Carrying Amount		Accumulated Amortization			Net
Trade names	15 years	$	25.2		$	(9.4)	$	15.8
Customer relationships and contracts	11 years	87.6			(44.2)		43.4
Channel sharing arrangements	35 years	12.6			(1.8)		10.8
Other	12 years	3.9			(1.3)		2.6
Total		$	129.3		$	(56.7)	$	72.6

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Future estimated annual amortization expense for intangible assets as of December 31, 2024, is as follows (in millions):

	Estimated Amortization
2025	$	7.4
2026	6.7
2027	4.9
2028	4.9
2029	4.7
Thereafter	36.1
Total	$	64.7