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Segment Information (Tables)
 12 Months Ended
Dec. 31, 2022
Segment Reporting [Abstract]  
Schedule of Total Revenues and Intersegment Revenues by Segment
Total revenues and intersegment revenues by segment for the years ended December 31, 2022, 2021 and 2020 consists of the following:
(Dollars in millions)202220212020
ASC$1,733 $1,940 $1,958 
IMS983 959 834 
Corporate & Eliminations(23)(20)(14)
Total revenue
$2,693 $2,879 $2,778 
(Dollars in millions)202220212020
ASC$21 $19 $13 
IMS2 1 1 
Total intersegment revenue
$23 $20 $14 
Schedule of Depreciation, Assets by Segment and EBITDA Reconciliation to Net Earnings
Depreciation by segment as of December 31, 2022, 2021 and 2020 consists of the following:
(Dollars in millions)202220212020
ASC$36 $33 $30 
IMS19 1614 
Total depreciation
$55 $49 $44 
Total assets by segment as of December 31, 2022 and 2021 consist of the following:
(Dollars in millions)20222021
ASC$2,167 $1,545 
IMS1,152 1,145 
Corporate & Eliminations358 379 
Total assets
$3,677 $3,069 
Reconciliation of reportable segment Adjusted EBITDA to Net Earnings (loss) consists of the following:
(Dollars in millions)202220212020
Adjusted EBITDA
ASC$199 $220 $213 
IMS119 90 55 
Corporate & Eliminations— — — 
Total Adjusted EBITDA
$318 $310 $268 
Amortization of intangibles(10)(9)(9)
Depreciation(55)(49)(44)
Restructuring costs(3)(5)(12)
Interest expense(34)(35)(64)
Deal related transaction costs (43)(5)(9)
Other non-operating expense(2)(7)(18)
Gain on sale of dispositions354 — — 
Income tax provision(120)(46)(27)
Net earnings
$405 $154 $85