v3.24.3
Revenues (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 27, 2024
Sep. 29, 2023
Sep. 27, 2024
Sep. 29, 2023
Disaggregation of Revenue [Line Items]        
Revenues $ 4,169 $ 3,897 $ 12,227 $ 11,389
United States        
Disaggregation of Revenue [Line Items]        
Revenues 3,830 3,557 11,214 10,397
International        
Disaggregation of Revenue [Line Items]        
Revenues 339 340 1,013 992
Cost-reimbursement and fixed-price-incentive-fee        
Disaggregation of Revenue [Line Items]        
Revenues 1,833 1,850 5,414 5,521
Firm-fixed-price        
Disaggregation of Revenue [Line Items]        
Revenues 1,781 1,547 5,159 4,337
Time-and-materials and fixed-price-level-of-effort        
Disaggregation of Revenue [Line Items]        
Revenues 555 500 1,654 1,531
National Security & Digital        
Disaggregation of Revenue [Line Items]        
Revenues 1,847 1,838 5,421 5,363
National Security & Digital | United States        
Disaggregation of Revenue [Line Items]        
Revenues 1,840 1,831 5,398 5,336
National Security & Digital | International        
Disaggregation of Revenue [Line Items]        
Revenues 7 7 23 27
National Security & Digital | Cost-reimbursement and fixed-price-incentive-fee        
Disaggregation of Revenue [Line Items]        
Revenues 980 993 2,874 2,876
National Security & Digital | Firm-fixed-price        
Disaggregation of Revenue [Line Items]        
Revenues 511 509 1,497 1,513
National Security & Digital | Time-and-materials and fixed-price-level-of-effort        
Disaggregation of Revenue [Line Items]        
Revenues 356 336 1,050 974
Health & Civil        
Disaggregation of Revenue [Line Items]        
Revenues 1,223 1,049 3,670 3,072
Health & Civil | United States        
Disaggregation of Revenue [Line Items]        
Revenues 1,222 1,047 3,666 3,069
Health & Civil | International        
Disaggregation of Revenue [Line Items]        
Revenues 1 2 4 3
Health & Civil | Cost-reimbursement and fixed-price-incentive-fee        
Disaggregation of Revenue [Line Items]        
Revenues 433 467 1,331 1,542
Health & Civil | Firm-fixed-price        
Disaggregation of Revenue [Line Items]        
Revenues 737 537 2,176 1,394
Health & Civil | Time-and-materials and fixed-price-level-of-effort        
Disaggregation of Revenue [Line Items]        
Revenues 53 45 163 136
Commercial & International        
Disaggregation of Revenue [Line Items]        
Revenues 577 548 1,645 1,581
Commercial & International | United States        
Disaggregation of Revenue [Line Items]        
Revenues 257 221 692 630
Commercial & International | International        
Disaggregation of Revenue [Line Items]        
Revenues 320 327 953 951
Commercial & International | Cost-reimbursement and fixed-price-incentive-fee        
Disaggregation of Revenue [Line Items]        
Revenues 94 89 269 263
Commercial & International | Firm-fixed-price        
Disaggregation of Revenue [Line Items]        
Revenues 378 367 1,049 1,005
Commercial & International | Time-and-materials and fixed-price-level-of-effort        
Disaggregation of Revenue [Line Items]        
Revenues 105 92 327 313
Defense Systems        
Disaggregation of Revenue [Line Items]        
Revenues 522 462 1,491 1,373
Defense Systems | United States        
Disaggregation of Revenue [Line Items]        
Revenues 511 458 1,458 1,362
Defense Systems | International        
Disaggregation of Revenue [Line Items]        
Revenues 11 4 33 11
Defense Systems | Cost-reimbursement and fixed-price-incentive-fee        
Disaggregation of Revenue [Line Items]        
Revenues 326 301 940 840
Defense Systems | Firm-fixed-price        
Disaggregation of Revenue [Line Items]        
Revenues 155 134 437 425
Defense Systems | Time-and-materials and fixed-price-level-of-effort        
Disaggregation of Revenue [Line Items]        
Revenues 41 27 114 108
DoD and U.S. Intelligence Community        
Disaggregation of Revenue [Line Items]        
Revenues 2,014 1,947 5,874 5,624
DoD and U.S. Intelligence Community | National Security & Digital        
Disaggregation of Revenue [Line Items]        
Revenues 1,281 1,235 3,749 3,582
DoD and U.S. Intelligence Community | Health & Civil        
Disaggregation of Revenue [Line Items]        
Revenues 243 257 755 797
DoD and U.S. Intelligence Community | Commercial & International        
Disaggregation of Revenue [Line Items]        
Revenues 15 11 29 26
DoD and U.S. Intelligence Community | Defense Systems        
Disaggregation of Revenue [Line Items]        
Revenues 475 444 1,341 1,219
Other U.S. government agencies        
Disaggregation of Revenue [Line Items]        
Revenues 1,636 1,468 4,784 4,239
Other U.S. government agencies | National Security & Digital        
Disaggregation of Revenue [Line Items]        
Revenues 540 570 1,585 1,682
Other U.S. government agencies | Health & Civil        
Disaggregation of Revenue [Line Items]        
Revenues 964 776 2,867 2,230
Other U.S. government agencies | Commercial & International        
Disaggregation of Revenue [Line Items]        
Revenues 114 91 268 236
Other U.S. government agencies | Defense Systems        
Disaggregation of Revenue [Line Items]        
Revenues 18 31 64 91
Commercial and non-U.S. customers        
Disaggregation of Revenue [Line Items]        
Revenues 519 482 1,569 1,526
Commercial and non-U.S. customers | National Security & Digital        
Disaggregation of Revenue [Line Items]        
Revenues 26 33 87 99
Commercial and non-U.S. customers | Health & Civil        
Disaggregation of Revenue [Line Items]        
Revenues 16 16 48 45
Commercial and non-U.S. customers | Commercial & International        
Disaggregation of Revenue [Line Items]        
Revenues 448 446 1,348 1,319
Commercial and non-U.S. customers | Defense Systems        
Disaggregation of Revenue [Line Items]        
Revenues $ 29 $ (13) $ 86 $ 63