v3.26.1
INFORMATION ON BUSINESS SEGMENTS - Schedule of Income Statement Information For Each Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 28, 2026
Jun. 29, 2025
Jun. 28, 2026
Jun. 29, 2025
Segment Reporting [Line Items]        
Total sales $ 20,063 $ 18,155 $ 38,084 $ 36,118
United States        
Segment Reporting [Line Items]        
Total sales 14,188 13,239 26,567 26,280
Europe        
Segment Reporting [Line Items]        
Total sales 2,802 2,086 5,427 4,054
Asia Pacific        
Segment Reporting [Line Items]        
Total sales 1,983 1,857 3,652 3,601
Middle East        
Segment Reporting [Line Items]        
Total sales 384 757 1,178 1,461
Other        
Segment Reporting [Line Items]        
Total sales 706 216 1,260 722
U.S. Government        
Segment Reporting [Line Items]        
Total sales 14,127 13,171 26,437 26,120
International        
Segment Reporting [Line Items]        
Total sales 5,875 4,916 11,517 9,838
U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 61 68 130 160
Fixed-price        
Segment Reporting [Line Items]        
Total sales 12,071 10,566 22,481 21,321
Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 7,992 7,589 15,603 14,797
Products        
Segment Reporting [Line Items]        
Total sales 16,783 15,149 31,614 30,085
Services        
Segment Reporting [Line Items]        
Total sales 3,280 3,006 6,470 6,033
Operating Segments        
Segment Reporting [Line Items]        
Total sales 20,063 18,155 38,084 36,118
Operating Segments | Aeronautics        
Segment Reporting [Line Items]        
Total sales 8,112 7,420 15,065 14,477
Operating Segments | Aeronautics | United States        
Segment Reporting [Line Items]        
Total sales 4,750 4,654 8,894 9,306
Operating Segments | Aeronautics | Europe        
Segment Reporting [Line Items]        
Total sales 1,729 1,404 3,166 2,651
Operating Segments | Aeronautics | Asia Pacific        
Segment Reporting [Line Items]        
Total sales 1,143 984 2,050 1,824
Operating Segments | Aeronautics | Middle East        
Segment Reporting [Line Items]        
Total sales 126 159 351 307
Operating Segments | Aeronautics | Other        
Segment Reporting [Line Items]        
Total sales 364 219 604 389
Operating Segments | Aeronautics | U.S. Government        
Segment Reporting [Line Items]        
Total sales 4,745 4,646 8,878 9,288
Operating Segments | Aeronautics | International        
Segment Reporting [Line Items]        
Total sales 3,362 2,766 6,171 5,171
Operating Segments | Aeronautics | U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 5 8 16 18
Operating Segments | Aeronautics | Fixed-price        
Segment Reporting [Line Items]        
Total sales 5,528 4,912 10,025 9,625
Operating Segments | Aeronautics | Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 2,584 2,508 5,040 4,852
Operating Segments | Aeronautics | Products        
Segment Reporting [Line Items]        
Total sales 6,608 5,960 12,113 11,706
Operating Segments | Aeronautics | Services        
Segment Reporting [Line Items]        
Total sales 1,504 1,460 2,952 2,771
Operating Segments | MFC        
Segment Reporting [Line Items]        
Total sales 4,101 3,433 7,750 6,806
Operating Segments | MFC | United States        
Segment Reporting [Line Items]        
Total sales 3,235 2,443 5,607 4,838
Operating Segments | MFC | Europe        
Segment Reporting [Line Items]        
Total sales 503 381 1,090 776
Operating Segments | MFC | Asia Pacific        
Segment Reporting [Line Items]        
Total sales 204 223 480 447
Operating Segments | MFC | Middle East        
Segment Reporting [Line Items]        
Total sales 127 375 517 717
Operating Segments | MFC | Other        
Segment Reporting [Line Items]        
Total sales 32 11 56 28
Operating Segments | MFC | U.S. Government        
Segment Reporting [Line Items]        
Total sales 3,234 2,440 5,606 4,831
Operating Segments | MFC | International        
Segment Reporting [Line Items]        
Total sales 866 990 2,143 1,968
Operating Segments | MFC | U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 1 3 1 7
Operating Segments | MFC | Fixed-price        
Segment Reporting [Line Items]        
Total sales 3,058 2,447 5,719 4,887
Operating Segments | MFC | Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 1,043 986 2,031 1,919
Operating Segments | MFC | Products        
Segment Reporting [Line Items]        
Total sales 3,700 3,065 7,023 6,082
Operating Segments | MFC | Services        
Segment Reporting [Line Items]        
Total sales 401 368 727 724
Operating Segments | RMS        
Segment Reporting [Line Items]        
Total sales 4,354 3,995 8,345 8,323
Operating Segments | RMS | United States        
Segment Reporting [Line Items]        
Total sales 2,787 2,910 5,305 5,770
Operating Segments | RMS | Europe        
Segment Reporting [Line Items]        
Total sales 539 279 1,110 583
Operating Segments | RMS | Asia Pacific        
Segment Reporting [Line Items]        
Total sales 587 601 1,029 1,234
Operating Segments | RMS | Middle East        
Segment Reporting [Line Items]        
Total sales 131 219 301 431
Operating Segments | RMS | Other        
Segment Reporting [Line Items]        
Total sales 310 (14) 600 305
Operating Segments | RMS | U.S. Government        
Segment Reporting [Line Items]        
Total sales 2,739 2,858 5,207 5,645
Operating Segments | RMS | International        
Segment Reporting [Line Items]        
Total sales 1,567 1,085 3,040 2,553
Operating Segments | RMS | U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 48 52 98 125
Operating Segments | RMS | Fixed-price        
Segment Reporting [Line Items]        
Total sales 2,592 2,295 4,922 4,955
Operating Segments | RMS | Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 1,762 1,700 3,423 3,368
Operating Segments | RMS | Products        
Segment Reporting [Line Items]        
Total sales 3,516 3,332 6,688 6,828
Operating Segments | RMS | Services        
Segment Reporting [Line Items]        
Total sales 838 663 1,657 1,495
Operating Segments | Space        
Segment Reporting [Line Items]        
Total sales 3,496 3,307 6,924 6,512
Operating Segments | Space | United States        
Segment Reporting [Line Items]        
Total sales 3,416 3,232 6,761 6,366
Operating Segments | Space | Europe        
Segment Reporting [Line Items]        
Total sales 31 22 61 44
Operating Segments | Space | Asia Pacific        
Segment Reporting [Line Items]        
Total sales 49 49 93 96
Operating Segments | Space | Middle East        
Segment Reporting [Line Items]        
Total sales 0 4 9 6
Operating Segments | Space | Other        
Segment Reporting [Line Items]        
Total sales 0 0 0 0
Operating Segments | Space | U.S. Government        
Segment Reporting [Line Items]        
Total sales 3,409 3,227 6,746 6,356
Operating Segments | Space | International        
Segment Reporting [Line Items]        
Total sales 80 75 163 146
Operating Segments | Space | U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 7 5 15 10
Operating Segments | Space | Fixed-price        
Segment Reporting [Line Items]        
Total sales 893 912 1,815 1,854
Operating Segments | Space | Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 2,603 2,395 5,109 4,658
Operating Segments | Space | Products        
Segment Reporting [Line Items]        
Total sales 2,959 2,792 5,790 5,469
Operating Segments | Space | Services        
Segment Reporting [Line Items]        
Total sales $ 537 $ 515 $ 1,134 $ 1,043