Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Goodwill by Reportable Segments

The table below summarizes changes in the carrying amount of goodwill by business segment.

Dollars in millions	Government Solutions			Technology Solutions			Energy Solutions			Total
Balance as of January 1, 2018	$	679		$	51		$	238		$	968
Goodwill acquired during the period	299			—			—			299
Purchase price adjustment	2			—			—			2
Foreign currency translation	(3		)	—			(1		)	(4		)
Balance as of December 31, 2018	$	977		$	51		$	237		$	1,265
Goodwill acquired during the period	$	—					$	—		$	—
Purchase price adjustment	—			—			—			—
Foreign currency translation	1			(1		)	—			—
Balance as of December 31, 2019	$	978		$	50		$	237		$	1,265

Cost and Accumulated Amortization of Intangible Assets

The cost and accumulated amortization of our intangible assets were as follows:

Dollars in millions	December 31, 2019
	Weighted Average Remaining Useful Lives	Intangible Assets, Gross		Accumulated Amortization			Intangible Assets, Net
Trademarks/trade names	Indefinite	$	61	$	—		$	61
Customer relationships	16	271		(83		)	188
Developed technologies	22	68		(36		)	32
Contract backlog	19	255		(52		)	203
Other	14	24		(13		)	11
Total intangible assets		$	679	$	(184	)	$	495
	December 31, 2018
	Weighted Average Remaining Useful Lives	Intangible Assets, Gross		Accumulated Amortization			Intangible Assets, Net
Trademarks/trade names	Indefinite	$	61	$	—		$	61
Customer relationships	17	272		(69		)	203
Developed technologies	22	61		(34		)	27
Contract backlog	20	249		(36		)	213
Other	14	24		(12		)	12
Total intangible assets		$	667	$	(151	)	$	516

Amortization Expense of Intangible Assets

Our intangibles amortization expense is presented below:

	Years ended December 31,
Dollars in millions	2019		2018		2017
Intangibles amortization expense	$	33	$	32	$	21

Expected Amortization Expense of Intangibles

Our expected intangibles amortization expense for the next five years is presented below:

Dollars in millions	Expected future intangibles amortization expense
2020	$	32
2021	$	28
2022	$	23
2023	$	23
2024	$	23
Beyond 2024	$	304