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BUSINESS SEGMENT INFORMATION - Revenues and Income From Continuing Operations by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jul. 01, 2022 | Jun. 30, 2023 | Jul. 01, 2022
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | $ 4,693 | $ 4,135 | $ 9,164 | $ 8,238
Unallocated Items: |  |  |  |
Unallocated corporate department (expense) income, net | (35) | 19 | (41) | 15
Amortization of acquisition-related intangibles | (173) | (151) | (338) | (303)
Additional cost of sales related to the fair value step-up in inventory sold | (15) | 0 | (30) | 0
L3Harris merger-related integration expenses | 0 | (26) | 0 | (50)
Acquisition-related transaction and integration expenses | (36) | 0 | (76) | 0
Pre-acquisition and other divestiture-related expenses | (2) | (35) | (12) | (36)
Business divestiture-related gains, net | 26 | 0 | 26 | 0
Gain on sale of asset group | 0 | 8 | 0 | 8
Impairment of other assets | (21) | 0 | (39) | 0
LHX NeXt | (22) | 0 | (35) | 0
FAS/CAS operating adjustment | 23 | 21 | 45 | 43
Total unallocated items | (255) | (164) | (500) | (323)
Non-operating income, net | 83 | 108 | 165 | 214
Interest expense, net | (111) | (67) | (213) | (135)
Income before income taxes | 372 | 525 | 745 | 1,061
FAS/CAS operating adjustment | 23 | 21 | 45 | 43
Contract-Based Intangible Assets |  |  |  |
Unallocated Items: |  |  |  |
Impairment of other assets |  |  | (18) |
Pension |  |  |  |
Unallocated Items: |  |  |  |
FAS pension service cost | (6) | (12) | (12) | (22)
Non-service FAS pension income | (70) | (106) | (140) | (211)
Pension | Plans Under US Government Contracts |  |  |  |
Unallocated Items: |  |  |  |
FAS/CAS operating adjustment | 23 | 21 | 45 | 43
FAS pension service cost | (7) | (12) | (13) | (23)
Less: CAS pension cost | (30) | (33) | (58) | (66)
FAS/CAS operating adjustment | 23 | 21 | 45 | 43
Non-service FAS pension income | 77 | 111 | 154 | 221
FAS/CAS pension adjustment, net | 100 | 132 | 199 | 264
IMS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,735 | 1,608 | 3,435 | 3,267
Unallocated Items: |  |  |  |
Other asset impairment charges | (12) |  |  |
SAS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,715 | 1,572 | 3,370 | 3,089
Unallocated Items: |  |  |  |
Other asset impairment charges | (27) |  |  |
CS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,289 | 993 | 2,452 | 1,956
Operating segments |  |  |  |
Income before Income Taxes |  |  |  |
Segment Operating Income (Loss) | 655 | 648 | 1,293 | 1,305
Operating segments | IMS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,735 | 1,608 | 3,435 | 3,267
Income before Income Taxes |  |  |  |
Segment Operating Income (Loss) | 162 | 207 | 347 | 458
Operating segments | SAS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,715 | 1,572 | 3,370 | 3,089
Income before Income Taxes |  |  |  |
Segment Operating Income (Loss) | 168 | 203 | 355 | 380
Operating segments | CS |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | 1,289 | 993 | 2,452 | 1,956
Income before Income Taxes |  |  |  |
Segment Operating Income (Loss) | 325 | 238 | 591 | 467
Corporate |  |  |  |
Revenue from Product Sales and Services |  |  |  |
Revenue from product sales and services | $ (46) | $ (38) | $ (93) | $ (74)

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