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BUSINESS SEGMENT INFORMATION - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
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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

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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