v3.25.0.1
Segment Operating Profit (Loss) Reconciliation (Table) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues $ 11,535 $ 11,454 $ 10,676
Income (loss) from operating investments, net 49 37 48
Other income and gains, net 9 120 1
Operating income (loss) 535 781 565
Product [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 7,464 7,664 7,283
Cost of sales and services revenues 6,500 6,467 6,225
Service [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 4,071 3,790 3,393
Cost of sales and services revenues 3,585 3,341 3,011
Intersegment Eliminations [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues (138) (130) (133)
Cost of sales and services revenues (138) (130) (133)
Operating Segments [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 11,535 11,454 10,676
Income (loss) from operating investments, net 49 37 48
Other income and gains, net 9 120 1
Other segment items 997 1,033 922
Operating income (loss) 573 842 712
Operating Segments [Member] | Product [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 7,464 7,664 7,283
Cost of sales and services revenues 6,448 6,406 6,101
Operating Segments [Member] | Service [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 4,071 3,790 3,393
Cost of sales and services revenues 3,575 3,330 2,990
Segment Reporting, Reconciling Item, Corporate Nonsegment      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
FAS/CAS Adjustment (62) (72) (145)
Deferred state income taxes 24 11 (2)
Ingalls [Member] | Intersegment Eliminations [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 8 9 12
Cost of sales and services revenues 8 9 12
Ingalls [Member] | Operating Segments [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 2,767 2,752 2,570
Income (loss) from operating investments, net 1    
Other income and gains, net   71  
Other segment items 185 214 173
Operating income (loss) 211 362 292
Ingalls [Member] | Operating Segments [Member] | Product [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 2,424 2,495 2,372
Cost of sales and services revenues 2,070 2,031 1,931
Ingalls [Member] | Operating Segments [Member] | Service [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 335 248 186
Cost of sales and services revenues 294 207 162
Newport News Shipbuilding [Member] | Intersegment Eliminations [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 3 3 5
Cost of sales and services revenues 3 3 5
Newport News Shipbuilding [Member] | Operating Segments [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 5,969 6,133 5,852
Other income and gains, net 10    
Other segment items 589 597 535
Operating income (loss) 246 379 357
Newport News Shipbuilding [Member] | Operating Segments [Member] | Product [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 4,921 5,053 4,821
Cost of sales and services revenues 4,276 4,254 4,097
Newport News Shipbuilding [Member] | Operating Segments [Member] | Service [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 1,045 1,077 1,026
Cost of sales and services revenues 865 900 858
Mission Technologies [Member] | Intersegment Eliminations [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 127 118 116
Cost of sales and services revenues 127 118 116
Mission Technologies [Member] | Operating Segments [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 2,937 2,699 2,387
Income (loss) from operating investments, net 48 37 48
Other income and gains, net (1) 49 1
Other segment items 223 222 214
Operating income (loss) 116 101 63
Mission Technologies [Member] | Operating Segments [Member] | Product [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 119 116 90
Cost of sales and services revenues 102 121 73
Mission Technologies [Member] | Operating Segments [Member] | Service [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Sales and service revenues 2,691 2,465 2,181
Cost of sales and services revenues $ 2,416 $ 2,223 $ 1,970