BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
Mar. 29, 2024
Accounting Policies [Abstract]
Principles of Consolidation	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 29, 2023 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.
Use of Estimates	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.
Recently Issued Accounting Pronouncements and Significant Accounting Policies Update	Recently Issued Accounting Pronouncements In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07). This accounting standard requires additional segment disclosures on an annual and interim basis, including significant segment expenses that are regularly provided to the chief operating decision maker. The standard does not change how operating segments and reportable segments are determined. ASU 2023-07 is effective for annual reporting periods beginning after December 15, 2023 and interim reporting periods beginning after December 15, 2024. The standard is required to be applied retrospectively to all periods presented in the consolidated financial statements. We plan to adopt the standard for fiscal 2024. We are evaluating the impact of ASU 2023-07 and expect the standard will only impact our segment disclosures with no material impact to the consolidated financial statements. In December 2023, the FASB issued Accounting Standards Update 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09). This accounting standard requires disaggregated income tax disclosures on an annual basis, including information on our effective income tax rate reconciliation and income taxes paid. ASU 2023-09 is effective for annual reporting periods beginning after December 15, 2024, and may be applied prospectively or retrospectively. We are evaluating the impact of ASU 2023-09 and expect the standard will only impact our income taxes disclosures with no material impact to the consolidated financial statements. Significant Accounting Policies Update There have been no material changes to our significant accounting policies described in our Fiscal 2023 Form 10-K.
Earnings Per Share	We define EPS as net income attributable to L3Harris common shareholders divided by either our weighted average number of basic or diluted shares outstanding. Potential dilutive common shares primarily consist of employee stock options and restricted and performance unit awards.
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)

3 Months Ended

Mar. 29, 2024

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 29, 2023 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.

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.

Recently Issued Accounting Pronouncements and Significant Accounting Policies Update

Recently Issued Accounting Pronouncements

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07). This accounting standard requires additional segment disclosures on an annual and interim basis, including significant segment expenses that are regularly provided to the chief operating decision maker. The standard does not change how operating segments and reportable segments are determined. ASU 2023-07 is effective for annual reporting periods beginning after December 15, 2023 and interim reporting periods beginning after December 15, 2024. The standard is required to be applied retrospectively to all periods presented in the consolidated financial statements. We plan to adopt the standard for fiscal 2024. We are evaluating the impact of ASU 2023-07 and expect the standard will only impact our segment disclosures with no material impact to the consolidated financial statements.

In December 2023, the FASB issued Accounting Standards Update 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (ASU 2023-09). This accounting standard requires disaggregated income tax disclosures on an annual basis, including information on our effective income tax rate reconciliation and income taxes paid. ASU 2023-09 is effective for annual reporting periods beginning after December 15, 2024, and may be applied prospectively or retrospectively. We are evaluating the impact of ASU 2023-09 and expect the standard will only impact our income taxes disclosures with no material impact to the consolidated financial statements.

Significant Accounting Policies Update

There have been no material changes to our significant accounting policies described in our Fiscal 2023 Form 10-K.

Earnings Per Share

We define EPS as net income attributable to L3Harris common shareholders divided by either our weighted average number of basic or diluted shares outstanding. Potential dilutive common shares primarily consist of employee stock options and restricted and performance unit awards.

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.