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BUSINESS SEGMENT INFORMATION - Revenues and Income From Continuing Operations by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 29, 2023 | Sep. 30, 2022 | Sep. 29, 2023 | Sep. 30, 2022
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | $ 4,915 | $ 4,246 | $ 14,079 | $ 12,484
Unallocated Items: |  |  |  |
Unallocated corporate department (expense) income, net | (828) | (742) | (2,384) | (2,239)
Amortization of acquisition-related intangibles | (208) | (151) | (546) | (454)
Sale of asset group and business divestiture-related gains, net | 0 | 0 | 26 | 8
Non-operating income, net | 80 | 99 | 245 | 313
Interest expense, net | (159) | (70) | (372) | (205)
Income (loss) before income taxes | 400 | (321) | 1,145 | 740
Contract-Based Intangible Assets |  |  |  |
Unallocated Items: |  |  |  |
Impairment of goodwill and other assets |  |  | (18) |
In-process research and development | Discontinued Operations, Disposed of by Means Other than Sale, Abandonment | Open Water Power Facility |  |  |  |
Unallocated Items: |  |  |  |
Impairment of goodwill and other assets | (21) |  | (21) |
Pension |  |  |  |
Unallocated Items: |  |  |  |
FAS pension service cost | (10) | (10) | (22) | (32)
Non-service FAS pension income | (71) | (106) | (211) | (317)
Pension | Plans Under US Government Contracts |  |  |  |
Unallocated Items: |  |  |  |
FAS/CAS operating adjustment | 27 | 22 | 72 | 65
FAS pension service cost | (10) | (11) | (23) | (34)
Less: CAS pension cost | (37) | (33) | (95) | (99)
FAS/CAS operating adjustment | 27 | 22 | 72 | 65
Non-service FAS pension income | 78 | 111 | 232 | 332
FAS/CAS pension adjustment, net | 105 | 133 | 304 | 397
SAS |  |  |  |
Unallocated Items: |  |  |  |
Other asset impairment charges | (27) |  |  |
IMS |  |  |  |
Unallocated Items: |  |  |  |
Other asset impairment charges | (12) |  |  |
Operating segments |  |  |  |
Income (loss) before Income Taxes |  |  |  |
Segment operating income (loss) | 735 | (148) | 2,028 | 1,157
Unallocated Items: |  |  |  |
Total unallocated items | 735 | (148) | 2,028 | 1,157
Operating segments | SAS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,686 | 1,593 | 5,056 | 4,682
Income (loss) before Income Taxes |  |  |  |
Segment operating income (loss) | 210 | 92 | 565 | 472
Unallocated Items: |  |  |  |
Total unallocated items | 210 | 92 | 565 | 472
Operating segments | IMS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,568 | 1,630 | 5,003 | 4,897
Income (loss) before Income Taxes |  |  |  |
Segment operating income (loss) | 187 | (143) | 534 | 315
Unallocated Items: |  |  |  |
Total unallocated items | 187 | (143) | 534 | 315
Operating segments | CS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,255 | 1,068 | 3,707 | 3,024
Income (loss) before Income Taxes |  |  |  |
Segment operating income (loss) | 282 | (97) | 873 | 370
Unallocated Items: |  |  |  |
Total unallocated items | 282 | (97) | 873 | 370
Operating segments | AR |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 455 |  | 455 |
Income (loss) before Income Taxes |  |  |  |
Segment operating income (loss) | 56 |  | 56 |
Unallocated Items: |  |  |  |
Total unallocated items | 56 |  | 56 |
Corporate |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | (49) | (45) | (142) | (119)
Income (loss) before Income Taxes |  |  |  |
Segment operating income (loss) | (256) | (202) | (756) | (525)
Unallocated Items: |  |  |  |
Unallocated corporate department (expense) income, net | 14 | 18 | (27) | 33
Amortization of acquisition-related intangibles | (208) | (151) | (546) | (454)
Additional cost of sales related to the fair value step-up in inventory sold | 0 | 0 | (30) | 0
Merger, acquisition, and divestiture related expenses | (56) | (31) | (144) | (117)
Sale of asset group and business divestiture-related gains, net | 0 | 0 | 26 | 8
Impairment of goodwill and other assets | 0 | 0 | (39) | 0
LHX NeXt | (33) | 0 | (68) | 0
Charges for severance and other termination costs | 0 | (29) | 0 | (29)
Charge related to an additional pre-merger legal contingency | 0 | (31) | 0 | (31)
FAS/CAS operating adjustment | 27 | 22 | 72 | 65
Total unallocated items | (256) | (202) | (756) | (525)
FAS/CAS operating adjustment | $ 27 | $ 22 | $ 72 | $ 65

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