| **Cover Page**                              | Oct. 26, 2022                           |
|---------------------------------------------|-----------------------------------------|
| **Cover [Abstract]**                        |                                    |
| Document Type                               | 8-K                                     |
| Document Period End Date                    | Oct. 26,  2023                          |
| Entity Registrant Name                      | L3HARRIS TECHNOLOGIES, INC.             |
| Entity Incorporation, State or Country Code | DE                                      |
| Entity File Number                          | 1-3863                                  |
| Entity Tax Identification Number            | 34-0276860                              |
| Entity Address, Address Line One            | 1025 West NASA Boulevard                |
| Entity Address, City or Town                | Melbourne,                              |
| Entity Address, State or Province           | FL                                      |
| Entity Address, Postal Zip Code             | 32919                                   |
| City Area Code                              | 321                                     |
| Local Phone Number                          | 727-9100                                |
| Written Communications                      | false                                   |
| Soliciting Material                         | false                                   |
| Pre-commencement Tender Offer               | false                                   |
| Pre-commencement Issuer Tender Offer        | false                                   |
| Title of 12(b) Security                     | Common Stock, par value $1.00 per share |
| Trading Symbol                              | LHX                                     |
| Security Exchange Name                      | NYSE                                    |
| Entity Emerging Growth Company              | false                                   |
| Entity Central Index Key                    | 0000202058                              |
| Amendment Flag                              | false                                   |

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period.  The format of the date is YYYY-MM-DD.
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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.
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Local phone number for entity.
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