Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

The Company’s intangible assets consisted of the following:

	March 31, 2025							December 31, 2024
	Gross Carrying		Accumulated			Net		Gross Carrying		Accumulated			Net
(dollars in millions)	Amount		Amortization			Amount		Amount		Amortization			Amount
Intangible assets subject to amortization
Customer relationships	$	545.0	$	(221.4	)	$	323.6	$	545.0	$	(208.2	)	$	336.8
Trade names		22.4		(20.7	)		1.7		22.4		(20.6	)		1.8
Technology		1.1		(0.5	)		0.6		1.1		(0.5	)		0.6
Total		568.5		(242.6	)		325.9		568.5		(229.3	)		339.2
Intangible assets not subject to amortization
FCC licenses and spectrum usage rights		7.4		—			7.4		7.4		—			7.4
Perpetual licenses		6.8		—			6.8		6.8		—			6.8
Total intangible assets	$	582.7	$	(242.6	)	$	340.1	$	582.7	$	(229.3	)	$	353.4

Schedule of Estimated Useful Lives for Finite-lived Intangible Assets

The estimated useful lives for each finite-lived intangible asset class are as follows:

Customer relationships	15 years
Trade names	3 to 10 years
Technology	7 years

Schedule of Estimated Amortization Expense

The annual estimated amortization expense for future years is as follows:

(dollars in millions)
Nine months ending December 31, 2025	$	40.1
2026		48.9
2027		44.4
2028		39.8
2029		35.2
Thereafter		117.5
Total	$	325.9