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Segment Information (Tables)
 12 Months Ended
Dec. 31, 2021
Segment Reporting [Abstract]  
Segment Operating Profit (Loss) Reconciliation [Table Text Block] The following table presents the Company's operating results by segment:
 Year Ended December 31
($ in millions)202120202019
Sales and Service Revenues
Ingalls$2,528 $2,678 $2,555 
Newport News5,663 5,571 5,231 
Technical Solutions1,476 1,268 1,237 
Intersegment eliminations(143)(156)(124)
Total sales and service revenues$9,524 $9,361 $8,899 
Operating Income (Loss)
Ingalls$281 $281 $235 
Newport News352 233 410 
Technical Solutions50 41 (14)
Total segment operating income683 555 631 
Non-segment factors affecting operating income
Operating FAS/CAS Adjustment(157)248 124 
Non-current state income taxes(13)(4)(19)
Total operating income$513 $799 $736 
Segment Assets Reconciliation [Table Text Block] The following tables present the Company's assets, capital expenditures, and depreciation and amortization by segment:
December 31
($ in millions)202120202019
Assets
Ingalls$1,659 $1,612 1,618 
Newport News4,179 4,124 3,886 
Technical Solutions3,553 1,379 1,022 
Corporate1,236 1,042 505 
Total assets$10,627 $8,157 $7,031 
Segment Other Significant Items Reconciliation [Table Text Block]
Year Ended December 31
($ in millions)202120202019
Capital Expenditures(1)
Ingalls$72 $104 $182 
Newport News201 212 244 
Technical Solutions38 20 9 
Corporate— — 1 
Total capital expenditures$311 $336 $436 
(1) Net of grant proceeds for capital expenditures
Year Ended December 31
($ in millions)202120202019
Depreciation and Amortization(1)
Ingalls$74 $73 $70 
Newport News146 133 124 
Technical Solutions72 40 32 
Corporate1 1 1 
Total depreciation and amortization$293 $247 $227 
(1) Excluding amortization of debt issuance costs