BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
Sep. 29, 2023
Accounting Policies [Abstract]
Principles of Consolidation	The accompanying Condensed Consolidated Financial Statements include the accounts of L3Harris Technologies, Inc. and its consolidated subsidiaries. As used in these notes to Condensed Consolidated Financial Statements (these “Notes”), the terms “L3Harris,” “Company,” “we,” “our” and “us” refer to L3Harris Technologies, Inc. and its consolidated subsidiaries. Intracompany transactions and accounts have been eliminated. The accompanying Condensed Consolidated Financial Statements have been prepared by L3Harris in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). Accordingly, such interim financial statements do not include all information and footnotes necessary for a complete presentation of financial condition, results of operations, cash flows and equity in conformity with GAAP for annual financial statements and are not necessarily indicative of the results that may be expected for the full fiscal year or any subsequent period. In the opinion of management, such interim financial statements reflect all adjustments (including normal recurring adjustments) considered necessary for a fair presentation of our financial condition, results of operations, cash flows and equity for the periods presented therein. The balance sheet at December 30, 2022 has been derived from our audited financial statements, but does not include all of the information and footnotes required by GAAP for annual financial statements.
Business Realignment	Effective for fiscal 2023, which began December 31, 2022, we adjusted our reporting to better align our businesses and transferred our Agile Development Group (“ADG”) business from our Integrated Mission Systems (“IMS”) segment to our Space & Airborne Systems (“SAS”) segment.The historical results, discussion and presentation of our business segments as set forth in the accompanying Condensed Consolidated Financial Statements and these Notes reflect the impact of these changes for all periods presented in order to present segment information on a comparable basis. There is no impact on our previously reported consolidated statements of operations, balance sheets, statements of cash flows or statements of equity resulting from these changes.
Acquisition of Aerojet Rocketdyne Holdings, Inc. (“AJRD”) and New Business Segment	Upon completion of the acquisition, we established a new reportable segment, Aerojet Rocketdyne (“AR”). The operations of AJRD are reported in the newly established AR segment and in our corporate segment.
Use of Estimates	The preparation of financial statements in accordance with GAAP requires us to make estimates and assumptions that affect the amounts reported in the accompanying Condensed Consolidated Financial Statements and these Notes and related disclosures. These estimates and assumptions are based on experience and other information available prior to issuance of the accompanying Condensed Consolidated Financial Statements and these Notes. Materially different results can occur as circumstances change and additional information becomes known.
Accounting Standards Update	In October 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which requires entities to recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Accounting Standards Codification (“ASC”) 2014-09, Revenue from Contracts with Customers (Topic 606). The update generally results in an entity recognizing contract assets and contract liabilities at amounts consistent with those recorded by the acquiree immediately before the acquisition date rather than at fair value. The new standard is effective on a prospective basis for fiscal years beginning after December 15, 2022, with early adoption permitted. We adopted the new standard effective December 31, 2022. On January 3, 2023 and July 28, 2023 we completed the acquisitions of Viasat, Inc.’s Tactical Data Links product line (“TDL”) and AJRD, respectively. We applied the provisions of ASU 2021-08 in our purchase accounting for both acquisitions, and adoption of the new standard did not have a material impact on our operating results, financial position, or cash flows.
Earnings Per Share	Net income per common share attributable to L3Harris common shareholders (“EPS”) is computed by dividing earnings to L3Harris common shareholders less earnings allocated to participating securities, if applicable, by the weighted-average number of common shares outstanding for the period. Net income per diluted common share attributable to L3Harris common shareholders (“diluted EPS”) incorporates potential dilutive common shares, primarily consisting of employee stock options and restricted and performance share unit awards, into the weighted-average number of common shares outstanding.
Fair Value Measurements	Fair value is defined as the price that would be received from the sale of an asset or paid to transfer a liability in the principal market (or most advantageous market, in the absence of a principal market) for the asset or liability in an orderly transaction between market participants at the measurement date. Entities are required to maximize the use of observable inputs and minimize the use of unobservable inputs in measuring fair value and to utilize a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. The three levels of inputs used to measure fair value are as follows: •Level 1 — Quoted prices in active markets for identical assets or liabilities. •Level 2 — Observable inputs other than quoted prices included within Level 1, including quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and inputs other than quoted prices that are observable or are derived principally from, or corroborated by, observable market data by correlation or other means. •Level 3 — Unobservable inputs that are supported by little or no market activity, are significant to the fair value of the assets or liabilities and reflect our own assumptions about the assumptions market participants would use in pricing the asset or liability developed using the best information available in the circumstances. In certain instances, fair value is estimated using quoted market prices obtained from external pricing services. In obtaining such data from the external pricing services, we have evaluated the methodologies used to develop the estimate of fair value in order to assess whether such valuations are representative of fair value, including net asset value (“NAV”). Additionally, in certain circumstances, the NAV reported by an asset manager may be adjusted when sufficient evidence indicates NAV is not representative of fair value.

BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

9 Months Ended

Sep. 29, 2023

The accompanying Condensed Consolidated Financial Statements include the accounts of L3Harris Technologies, Inc. and its consolidated subsidiaries. As used in these notes to Condensed Consolidated Financial Statements (these “Notes”), the terms “L3Harris,” “Company,” “we,” “our” and “us” refer to L3Harris Technologies, Inc. and its consolidated subsidiaries. Intracompany transactions and accounts have been eliminated.

The accompanying Condensed Consolidated Financial Statements have been prepared by L3Harris in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). Accordingly, such interim financial statements do not include all information and footnotes necessary for a complete presentation of financial condition, results of operations, cash flows and equity in conformity with GAAP for annual financial statements and are not necessarily indicative of the results that may be expected for the full fiscal year or any subsequent period.

In the opinion of management, such interim financial statements reflect all adjustments (including normal recurring adjustments) considered necessary for a fair presentation of our financial condition, results of operations, cash flows and equity for the periods presented therein. The balance sheet at December 30, 2022 has been derived from our audited financial statements, but does not include all of the information and footnotes required by GAAP for annual financial statements.

Business Realignment

Effective for fiscal 2023, which began December 31, 2022, we adjusted our reporting to better align our businesses and transferred our Agile Development Group (“ADG”) business from our Integrated Mission Systems (“IMS”) segment to our Space & Airborne Systems (“SAS”) segment.The historical results, discussion and presentation of our business segments as set forth in the accompanying Condensed Consolidated Financial Statements and these Notes reflect the impact of these changes for all periods presented in order to present segment information on a comparable basis. There is no impact on our previously reported consolidated statements of operations, balance sheets, statements of cash flows or statements of equity resulting from these changes.

Acquisition of Aerojet Rocketdyne Holdings, Inc. (“AJRD”) and New Business Segment

Upon completion of the acquisition, we established a new reportable segment, Aerojet Rocketdyne (“AR”). The operations of AJRD are reported in the newly established AR segment and in our corporate segment.

Use of Estimates

The preparation of financial statements in accordance with GAAP requires us to make estimates and assumptions that affect the amounts reported in the accompanying Condensed Consolidated Financial Statements and these Notes and related disclosures. These estimates and assumptions are based on experience and other information available prior to issuance of the accompanying Condensed Consolidated Financial Statements and these Notes. Materially different results can occur as circumstances change and additional information becomes known.

Accounting Standards Update

In October 2021, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2021-08, Business Combinations (Topic 805): Accounting for Contract Assets and Contract Liabilities from Contracts with Customers, which requires entities to recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Accounting Standards Codification (“ASC”) 2014-09, Revenue from Contracts with Customers (Topic 606). The update generally results in an entity recognizing contract assets and contract liabilities at amounts consistent with those recorded by the acquiree immediately before the acquisition date rather than at fair value. The new standard is effective on a prospective basis for fiscal years beginning after December 15, 2022, with early adoption permitted. We adopted the new standard effective December 31, 2022. On January 3, 2023 and July 28, 2023 we completed the acquisitions of Viasat, Inc.’s Tactical Data Links product line (“TDL”) and AJRD, respectively. We applied the provisions of ASU 2021-08 in our purchase accounting for both acquisitions, and adoption of the new standard did not have a material impact on our operating results, financial position, or cash flows.

Earnings Per Share

Net income per common share attributable to L3Harris common shareholders (“EPS”) is computed by dividing earnings to L3Harris common shareholders less earnings allocated to participating securities, if applicable, by the weighted-average number of common shares outstanding for the period. Net income per diluted common share attributable to L3Harris common shareholders (“diluted EPS”) incorporates potential dilutive common shares, primarily consisting of employee stock options and restricted and performance share unit awards, into the weighted-average number of common shares outstanding.

Fair Value Measurements

Fair value is defined as the price that would be received from the sale of an asset or paid to transfer a liability in the principal market (or most advantageous market, in the absence of a principal market) for the asset or liability in an orderly transaction between market participants at the measurement date. Entities are required to maximize the use of observable inputs and minimize the use of unobservable inputs in measuring fair value and to utilize a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. The three levels of inputs used to measure fair value are as follows:

•Level 1 — Quoted prices in active markets for identical assets or liabilities.

•Level 2 — Observable inputs other than quoted prices included within Level 1, including quoted prices for similar assets or liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and inputs other than quoted prices that are observable or are derived principally from, or corroborated by, observable market data by correlation or other means.

•Level 3 — Unobservable inputs that are supported by little or no market activity, are significant to the fair value of the assets or liabilities and reflect our own assumptions about the assumptions market participants would use in pricing the asset or liability developed using the best information available in the circumstances.

In certain instances, fair value is estimated using quoted market prices obtained from external pricing services. In obtaining such data from the external pricing services, we have evaluated the methodologies used to develop the estimate of fair value in order to assess whether such valuations are representative of fair value, including net asset value (“NAV”). Additionally, in certain circumstances, the NAV reported by an asset manager may be adjusted when sufficient evidence indicates NAV is not representative of fair value.

- Definition

Disclosure of accounting policy for segment reporting.

+ References + Details