Segment Information (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Schedule of Total Revenues and Intersegment Revenues by Segment

Total revenues and intersegment revenues by segment for the three- and nine-month periods ended September 30, 2021 and, September 30, 2020 consists of the following:

	Three Months Ended September 30,				Nine Months Ended September 30,
(Dollars in millions)	2021		2020		2021		2020
AST	$	279	$	263	$	743	$	668
NC&C	239		267		747		749
IMS	209		194		584		553
Corporate & Eliminations	(7)		(4)		(15)		(18)
Total revenue	$	720	$	719	$	2,059	$	1,952

(Dollars in millions)	2021		2020		2021		2020
AST	$	2	$	2	$	5	$	10
NC&C	5		2		10		7
IMS	—		—		—		1
Total intersegment revenue	$	7	$	4	$	15	$	18

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

Depreciation by segment for the three- and nine-month periods ended September 30, 2021 and September 30, 2020 consists of the following:

	Three Months Ended September 30,				Nine Months Ended September 30,
(Dollars in millions)	2021		2020		2021		2020
AST	$	5	$	5	$	15	$	14
NC&C	4		3		10		9
IMS	4		3		12		10
Total depreciation	$	13	$	11	$	37	$	33

Total assets by segment as of September 30, 2021 and December 31, 2020 consist of the following:

(Dollars in millions)	September 30, 2021		December 31, 2020
AST	$	944	$	862
NC&C	651		691
IMS	1,001		963
Corporate & Eliminations	290		440
Total assets	$	2,886	$	2,956

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

	Three Months Ended September 30,				Nine Months Ended September 30,
(Dollars in millions)	2021		2020		2021		2020
Adjusted EBITDA
AST	$	34	$	38	$	99	$	80
NC&C	22		19		72		60
IMS	14		3		39		15
Corporate & Eliminations	—		2		—		2
Total Adjusted EBITDA	70		61		210		157
Amortization of intangibles	(3)		(3)		(7)		(7)
Depreciation	(13)		(11)		(37)		(33)
Restructuring costs	(1)		(2)		(1)		(4)
Interest expense	(9)		(17)		(27)		(49)
Transaction costs related to an anticipated offering of securities	—		—		(4)		—
Acquisition and divestiture related expenses	—		—		—		—
Foreign exchange	—		1		(1)		1
COVID-19 response costs	(1)		(9)		(6)		(11)
Non-service pension expense	—		—				(2)
Other one-time non-operational events	—		(1)				(3)
Income tax (provision) benefit	(8)		(4)		(31)		(11)
Net earnings (loss)	$	35	$	15	$	96	$	38