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BUSINESS SEGMENT INFORMATION - Revenues and Income From Continuing Operations by Segment (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Apr. 01, 2022 | Apr. 02, 2021
Segment Reporting Information [Line Items] |  |
Revenue from product sales and services | $ 4,103 | $ 4,567
Unallocated Items: |  |
Unallocated corporate department expense, net | (7) | (33)
L3Harris Merger-related transaction, integration and other expenses and losses | (20) | (21)
Amortization of acquisition-related intangibles | (152) | (164)
Business divestiture-related losses | 0 | (15)
Impairment of goodwill and other assets | 0 | (62)
Other items | (1) | (7)
FAS/CAS pension adjustment | 22 | 30
Total unallocated expenses | (158) | (272)
Non-operating income | 106 | 117
Net interest expense | (68) | (66)
Income from continuing operations before income taxes | 536 | 527
Accrual for value added tax obligation |  | 15
FAS pension service cost | (11) | (18)
Less: CAS pension cost | (33) | (48)
FAS/CAS pension adjustment | 22 | 30
Non-service FAS pension income | 110 | 111
Net FAS/CAS pension adjustment | 132 | 141
Operating segments |  |
Income from Continuing Operations before Income Taxes |  |
Segment Operating Income: | 656 | 748
Operating segments | Integrated Mission Systems |  |
Segment Reporting Information [Line Items] |  |
Revenue from product sales and services | 1,721 | 1,751
Income from Continuing Operations before Income Taxes |  |
Segment Operating Income: | 255 | 234
Operating segments | Space & Airborne Systems |  |
Segment Reporting Information [Line Items] |  |
Revenue from product sales and services | 1,450 | 1,460
Income from Continuing Operations before Income Taxes |  |
Segment Operating Income: | 172 | 192
Operating segments | Communication Systems |  |
Segment Reporting Information [Line Items] |  |
Revenue from product sales and services | 963 | 1,112
Income from Continuing Operations before Income Taxes |  |
Segment Operating Income: | 229 | 270
Other non-reportable businesses |  |
Segment Reporting Information [Line Items] |  |
Revenue from product sales and services | 0 | 284
Income from Continuing Operations before Income Taxes |  |
Segment Operating Income: | 0 | 52
Corporate eliminations |  |
Segment Reporting Information [Line Items] |  |
Revenue from product sales and services | $ (31) | $ (40)

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