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INFORMATION ON BUSINESS SEGMENTS - Summary of Operating Results For Each Business Segment (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 27, 2022
Mar. 28, 2021
Net sales    
Total net sales $ 14,964 $ 16,258
Operating profit    
Total operating profit 1,933 2,182
Unallocated items    
Severance and restructuring charges 0 36
Aeronautics    
Net sales    
Total net sales 6,401 6,387
Missiles and Fire Control    
Net sales    
Total net sales 2,452 2,749
Rotary and Mission Systems    
Net sales    
Total net sales 3,552 4,107
Space    
Net sales    
Total net sales 2,559 3,015
Business Segments    
Net sales    
Total net sales 14,964 16,258
Amortization of purchased intangibles (62) (81)
Operating profit    
Total operating profit 1,656 1,749
Business Segments | Aeronautics    
Net sales    
Total net sales 6,401 6,387
Amortization of purchased intangibles 0 0
Operating profit    
Total operating profit 679 693
Business Segments | Missiles and Fire Control    
Net sales    
Total net sales 2,452 2,749
Amortization of purchased intangibles (1) (1)
Operating profit    
Total operating profit 384 396
Business Segments | Rotary and Mission Systems    
Net sales    
Total net sales 3,552 4,107
Amortization of purchased intangibles (58) (58)
Operating profit    
Total operating profit 348 433
Business Segments | Space    
Net sales    
Total net sales 2,559 3,015
Amortization of purchased intangibles (3) (22)
Operating profit    
Total operating profit 245 227
Unallocated items    
Unallocated items    
FAS/CAS pension operating adjustment 426 489
Severance and restructuring charges 0 (36)
Other, net (149) (20)
Total unallocated items 277 433
Intersegment sales    
Net sales    
Total net sales 754 742
Intersegment sales | Aeronautics    
Net sales    
Total net sales 60 53
Intersegment sales | Missiles and Fire Control    
Net sales    
Total net sales 156 129
Intersegment sales | Rotary and Mission Systems    
Net sales    
Total net sales 455 478
Intersegment sales | Space    
Net sales    
Total net sales $ 83 $ 82