v3.26.3
INFORMATION ON BUSINESS SEGMENTS - Schedule of Income Statement Information For Each Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 27, 2026
Sep. 28, 2025
Sep. 27, 2026
Sep. 28, 2025
Segment Reporting [Line Items]        
Total sales $ 20,711 $ 18,609 $ 58,795 $ 54,727
United States        
Segment Reporting [Line Items]        
Total sales 14,350 13,430 40,917 39,710
Europe        
Segment Reporting [Line Items]        
Total sales 2,780 2,011 8,207 6,065
Asia Pacific        
Segment Reporting [Line Items]        
Total sales 2,216 2,003 5,868 5,604
Middle East        
Segment Reporting [Line Items]        
Total sales 700 633 1,878 2,094
Other        
Segment Reporting [Line Items]        
Total sales 665 532 1,925 1,254
U.S. Government        
Segment Reporting [Line Items]        
Total sales 14,291 13,371 40,728 39,491
International        
Segment Reporting [Line Items]        
Total sales 6,361 5,179 17,878 15,017
U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 59 59 189 219
Fixed-price        
Segment Reporting [Line Items]        
Total sales 12,516 11,007 34,997 32,328
Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 8,195 7,602 23,798 22,399
Products        
Segment Reporting [Line Items]        
Total sales 17,429 15,311 49,043 45,396
Services        
Segment Reporting [Line Items]        
Total sales 3,282 3,298 9,752 9,331
Operating Segments        
Segment Reporting [Line Items]        
Total sales 20,711 18,609 58,795 54,727
Operating Segments | Aeronautics        
Segment Reporting [Line Items]        
Total sales 8,214 7,256 23,279 21,733
Operating Segments | Aeronautics | United States        
Segment Reporting [Line Items]        
Total sales 4,753 4,685 13,647 13,991
Operating Segments | Aeronautics | Europe        
Segment Reporting [Line Items]        
Total sales 1,733 1,245 4,899 3,896
Operating Segments | Aeronautics | Asia Pacific        
Segment Reporting [Line Items]        
Total sales 1,217 926 3,267 2,750
Operating Segments | Aeronautics | Middle East        
Segment Reporting [Line Items]        
Total sales 175 138 526 445
Operating Segments | Aeronautics | Other        
Segment Reporting [Line Items]        
Total sales 336 262 940 651
Operating Segments | Aeronautics | U.S. Government        
Segment Reporting [Line Items]        
Total sales 4,744 4,681 13,622 13,969
Operating Segments | Aeronautics | International        
Segment Reporting [Line Items]        
Total sales 3,461 2,571 9,632 7,742
Operating Segments | Aeronautics | U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 9 4 25 22
Operating Segments | Aeronautics | Fixed-price        
Segment Reporting [Line Items]        
Total sales 5,541 4,758 15,566 14,383
Operating Segments | Aeronautics | Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 2,673 2,498 7,713 7,350
Operating Segments | Aeronautics | Products        
Segment Reporting [Line Items]        
Total sales 6,652 5,807 18,765 17,513
Operating Segments | Aeronautics | Services        
Segment Reporting [Line Items]        
Total sales 1,562 1,449 4,514 4,220
Operating Segments | MFC        
Segment Reporting [Line Items]        
Total sales 4,501 3,624 12,251 10,430
Operating Segments | MFC | United States        
Segment Reporting [Line Items]        
Total sales 3,246 2,635 8,853 7,473
Operating Segments | MFC | Europe        
Segment Reporting [Line Items]        
Total sales 595 401 1,685 1,177
Operating Segments | MFC | Asia Pacific        
Segment Reporting [Line Items]        
Total sales 235 281 715 728
Operating Segments | MFC | Middle East        
Segment Reporting [Line Items]        
Total sales 378 295 895 1,012
Operating Segments | MFC | Other        
Segment Reporting [Line Items]        
Total sales 47 12 103 40
Operating Segments | MFC | U.S. Government        
Segment Reporting [Line Items]        
Total sales 3,244 2,633 8,850 7,464
Operating Segments | MFC | International        
Segment Reporting [Line Items]        
Total sales 1,255 989 3,398 2,957
Operating Segments | MFC | U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 2 2 3 9
Operating Segments | MFC | Fixed-price        
Segment Reporting [Line Items]        
Total sales 3,296 2,638 9,015 7,525
Operating Segments | MFC | Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 1,205 986 3,236 2,905
Operating Segments | MFC | Products        
Segment Reporting [Line Items]        
Total sales 4,120 3,256 11,143 9,338
Operating Segments | MFC | Services        
Segment Reporting [Line Items]        
Total sales 381 368 1,108 1,092
Operating Segments | RMS        
Segment Reporting [Line Items]        
Total sales 4,511 4,373 12,856 12,696
Operating Segments | RMS | United States        
Segment Reporting [Line Items]        
Total sales 2,951 2,809 8,256 8,579
Operating Segments | RMS | Europe        
Segment Reporting [Line Items]        
Total sales 420 343 1,530 926
Operating Segments | RMS | Asia Pacific        
Segment Reporting [Line Items]        
Total sales 711 764 1,740 1,998
Operating Segments | RMS | Middle East        
Segment Reporting [Line Items]        
Total sales 147 199 448 630
Operating Segments | RMS | Other        
Segment Reporting [Line Items]        
Total sales 282 258 882 563
Operating Segments | RMS | U.S. Government        
Segment Reporting [Line Items]        
Total sales 2,912 2,764 8,119 8,409
Operating Segments | RMS | International        
Segment Reporting [Line Items]        
Total sales 1,560 1,564 4,600 4,117
Operating Segments | RMS | U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 39 45 137 170
Operating Segments | RMS | Fixed-price        
Segment Reporting [Line Items]        
Total sales 2,843 2,733 7,765 7,688
Operating Segments | RMS | Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 1,668 1,640 5,091 5,008
Operating Segments | RMS | Products        
Segment Reporting [Line Items]        
Total sales 3,693 3,509 10,381 10,337
Operating Segments | RMS | Services        
Segment Reporting [Line Items]        
Total sales 818 864 2,475 2,359
Operating Segments | Space        
Segment Reporting [Line Items]        
Total sales 3,485 3,356 10,409 9,868
Operating Segments | Space | United States        
Segment Reporting [Line Items]        
Total sales 3,400 3,301 10,161 9,667
Operating Segments | Space | Europe        
Segment Reporting [Line Items]        
Total sales 32 22 93 66
Operating Segments | Space | Asia Pacific        
Segment Reporting [Line Items]        
Total sales 53 32 146 128
Operating Segments | Space | Middle East        
Segment Reporting [Line Items]        
Total sales 0 1 9 7
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 3,391 3,293 10,137 9,649
Operating Segments | Space | International        
Segment Reporting [Line Items]        
Total sales 85 55 248 201
Operating Segments | Space | U.S. commercial and other        
Segment Reporting [Line Items]        
Total sales 9 8 24 18
Operating Segments | Space | Fixed-price        
Segment Reporting [Line Items]        
Total sales 836 878 2,651 2,732
Operating Segments | Space | Cost-reimbursable        
Segment Reporting [Line Items]        
Total sales 2,649 2,478 7,758 7,136
Operating Segments | Space | Products        
Segment Reporting [Line Items]        
Total sales 2,964 2,739 8,754 8,208
Operating Segments | Space | Services        
Segment Reporting [Line Items]        
Total sales $ 521 $ 617 $ 1,655 $ 1,660