Segment Information (Tables)

3 Months Ended

Mar. 31, 2021

Segment Reporting [Abstract]

Schedule of Total Revenues and Intersegment Revenues by Segment

Total revenues and intersegment revenues by segment for the periods ended March 31, 2021 and, March 31, 2020 consists of the following:

	Three Months Ended March 31,
(Dollars in millions)	2021		2020
AST	$	219	$	183
NC&C	264		217
IMS	201		190
Corporate & Eliminations	(3)		(7)
Total revenue	$	681	$	583

(Dollars in millions)	2021		2020
AST	$	1	$	4
NC&C	2		3
IMS	—		—
Total intersegment revenue	$	3	$	7

Schedule of Depreciation, Assets by Segment and EBITDA Reconciliation to Net Earnings

Depreciation by segment as of March 31, 2021 and March 31, 2020 consists of the following:

	Three Months Ended March 31,
(Dollars in millions)	2021		2020
AST	$	5	$	5
NC&C	3		3
IMS	4		3
Total depreciation	$	12	$	11

Total assets by segment as of March 31, 2021 and December 31, 2020 consist of the following:

(Dollars in millions)	March 31, 2021		December 31, 2020
AST	$	908	$	862
NC&C	719		691
IMS	1,015		963
Corporate & Eliminations	272		440
Total assets	$	2,914	$	2,956

Reconciliation of reportable segment Adjusted EBITDA to Net Earnings (loss) consists of the following:

(Dollars in millions)	March 31, 2021		March 31, 2020
Adjusted EBITDA
AST	$	28	$	17
NC&C	26		19
IMS	18		15
Corporate & Eliminations	(1)		(1)
Total Adjusted EBITDA	71		50
Amortization of intangibles	(2)		(2)
Depreciation	(12)		(11)
Restructuring costs	—		(2)
Interest expense	(9)		(15)
Transaction costs related to an anticipated offering of securities	(4)		—
Acquisition and divestiture related expenses
Foreign exchange	—		(5)
COVID-19 response costs	(3)		—
Non-service pension expense	—		(2)
Other one-time non-operational events			—
Income tax (provision) benefit	(12)		(3)
Net earnings (loss)	$	29	$	10