Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2022

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the Company's goodwill consisted of the following:

(dollars in millions)	IT Services and Hardware			Network		Total Company
Goodwill, balance as of December 31, 2021	$	157.4		$	488.9	$	646.3
Activity during the year:
Adjustments to prior year Merger		2.5			2.2		4.7
Acquisition of Agile		—			35.3		35.3
Adjustments to postretirement and other benefit obligations (Note 8)		19.6			15.4		35.0
Currency translations		(2.3	)		—		(2.3	)
Goodwill, balance as of September 30, 2022	$	177.2		$	541.8	$	719.0

Schedule of Intangible Assets

The Company’s intangible assets consisted of the following:

	September 30, 2022							December 31, 2021
	Gross Carrying		Accumulated			Net		Gross Carrying		Accumulated			Net
(dollars in millions)	Amount		Amortization			Amount		Amount		Amortization			Amount
Intangible assets subject to amortization
Customer relationships	$	861.4	$	(114.2	)	$	747.2	$	850.0	$	(36.2	)	$	813.8
Trade names		109.3		(16.9	)		92.4		108.0		(5.0	)		103.0
Technology		6.1		(0.8	)		5.3		5.0		(0.2	)		4.8
Total		976.8		(131.9	)		844.9		963.0		(41.4	)		921.6
Intangible assets not subject to amortization
FCC licenses and spectrum usage rights		6.9		—			6.9		6.7		—			6.7
Total intangible assets	$	983.7	$	(131.9	)	$	851.8	$	969.7	$	(41.4	)	$	928.3

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)
Three months ended December 31, 2022	$	30.6
2023		115.1
2024		105.8
2025		93.6
2026		86.2
Thereafter		413.6
Total	$	844.9