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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

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