BUSINESS SEGMENT INFORMATION - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended |
Apr. 01, 2022 | Apr. 02, 2021 |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | $ 4,103 | $ 4,567 |
Integrated Mission Systems | Transferred over Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 1,721 | 1,751 |
Integrated Mission Systems | Transferred over Time | United States | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 1,244 | 1,275 |
Integrated Mission Systems | Transferred over Time | International | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 461 | 464 |
Integrated Mission Systems | Transferred over Time | Fixed-price | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 1,277 | 1,294 |
Integrated Mission Systems | Transferred over Time | Cost-reimbursable | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 428 | 445 |
Integrated Mission Systems | Transferred over Time | Intersegment | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 16 | 12 |
Space & Airborne Systems | Transferred over Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 1,450 | 1,460 |
Space & Airborne Systems | Transferred over Time | United States | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 1,279 | 1,274 |
Space & Airborne Systems | Transferred over Time | International | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 165 | 183 |
Space & Airborne Systems | Transferred over Time | Fixed-price | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 863 | 914 |
Space & Airborne Systems | Transferred over Time | Cost-reimbursable | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 581 | 543 |
Space & Airborne Systems | Transferred over Time | Intersegment | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 6 | 3 |
Communication Systems | Transferred at Point in Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 963 | 1,112 |
Communication Systems | Transferred at Point in Time | United States | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 625 | 832 |
Communication Systems | Transferred at Point in Time | International | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 327 | 269 |
Communication Systems | Transferred at Point in Time | Fixed-price | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 797 | 940 |
Communication Systems | Transferred at Point in Time | Cost-reimbursable | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 155 | 161 |
Communication Systems | Transferred at Point in Time | Intersegment | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 11 | 11 |
Prime contractor | Integrated Mission Systems | Transferred over Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 1,131 | 1,189 |
Prime contractor | Space & Airborne Systems | Transferred over Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 931 | 876 |
Prime contractor | Communication Systems | Transferred at Point in Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 656 | 728 |
Subcontractor | Integrated Mission Systems | Transferred over Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 574 | 550 |
Subcontractor | Space & Airborne Systems | Transferred over Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | 513 | 581 |
Subcontractor | Communication Systems | Transferred at Point in Time | | |
Disaggregation of Revenue [Line Items] | | |
Revenue from product sales and services | $ 296 | $ 373 |