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INFORMATION ON BUSINESS SEGMENTS - Summary of Operating Results For Each Business Segment (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 29, 2020 | Mar. 31, 2019
Net sales |  |
Total net sales | $ 15,651 | $ 14,336
Operating profit |  |
Total operating profit | 2,122 | 2,283
Aeronautics |  |
Net sales |  |
Total net sales | 6,369 | 5,584
Missiles and Fire Control |  |
Net sales |  |
Total net sales | 2,619 | 2,350
Rotary and Mission Systems |  |
Net sales |  |
Total net sales | 3,746 | 3,762
Space |  |
Net sales |  |
Total net sales | 2,917 | 2,640
Business segments |  |
Net sales |  |
Total net sales | 15,651 | 14,336
Operating profit |  |
Total operating profit | 1,725 | 1,715
Business segments | Aeronautics |  |
Net sales |  |
Total net sales | 6,369 | 5,584
Operating profit |  |
Total operating profit | 672 | 585
Business segments | Missiles and Fire Control |  |
Net sales |  |
Total net sales | 2,619 | 2,350
Operating profit |  |
Total operating profit | 396 | 417
Business segments | Rotary and Mission Systems |  |
Net sales |  |
Total net sales | 3,746 | 3,762
Operating profit |  |
Total operating profit | 376 | 379
Business segments | Space |  |
Net sales |  |
Total net sales | 2,917 | 2,640
Operating profit |  |
Total operating profit | 281 | 334
Segment reconciling items |  |
Unallocated items |  |
FAS/CAS operating adjustment | 469 | 512
Stock-based compensation | (42) | (37)
Other, net | (30) | 93
Total unallocated items | 397 | 568
Intersegment sales |  |
Net sales |  |
Total net sales | 802 | 730
Intersegment sales | Aeronautics |  |
Net sales |  |
Total net sales | 59 | 42
Intersegment sales | Missiles and Fire Control |  |
Net sales |  |
Total net sales | 136 | 121
Intersegment sales | Rotary and Mission Systems |  |
Net sales |  |
Total net sales | 499 | 499
Intersegment sales | Space |  |
Net sales |  |
Total net sales | $ 108 | $ 68

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