Employer Matching Contribution up to 6% EBP, Employer Matching Contribution, Percentage Two [Member] EBP, Employer Matching Contribution, Percentage Two Maximum Maximum [Member] Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual funds Mutual Fund [Member] Notes receivable from participants, minimum borrowing term EBP, Note Receivable From Participant, Minimum Borrowing Term EBP, Note Receivable From Participant, Minimum Borrowing Term Investments sold EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Maximum borrowing amount for notes receivable from participants EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount FAIR VALUE OF INVESTMENTS EBP, Investment, Fair Value and NAV [Text Block] Minimum borrowing amount for notes receivable from participants EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Investments, at fair value Total Investment value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value Level 1 Fair Value, Inputs, Level 1 [Member] Schedule of Reconciliation of Financial Statements to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] NAV (in dollars per share) EBP, Net Asset Value per Share or Unit EBP, Investment, Fair Value and NAV [Abstract] Assets: EBP, Asset [Abstract] Statistical Measurement [Axis] Statistical Measurement [Axis] Additions to net assets attributed to: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Payments of Benefits EBP, Payment to Participant [Policy Text Block] Number of investment options EBP, Number of Investment Options EBP, Number of Investment Options Pre-tax automatic annual deferral rate increase EBP, Participant Contribution, Automatic, Annual Increase Deferral Rate Annual increase in percentage of eligible compensation contributed for participant automatically enrolled in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)) until the contribution reaches maximum threshold. Percentage of invested amount to fund value EBP, Investment, Invested Amount To Fund Value, Percentage EBP, Investment, Invested Amount To Fund Value, Percentage Amendment Flag Amendment Flag Participants' EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution Less: Deemed distributions of participant loans EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Deemed Distribution Maximum borrowing term for notes receivable from participants Notes receivable from participants, maximum borrowing term EBP, Note Receivable From Participant, Maximum Borrowing Term EBP, Note Receivable From Participant, Maximum Borrowing Term Basis of Accounting EBP, Basis of Accounting [Policy Text Block] Amounts forfeited from non-vested accounts EBP, Forfeited Nonvested Account, Increase From Participant Forfeitures EBP, Forfeited Nonvested Account, Increase From Participant Forfeitures EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Maximum contribution as a percentage of pre-tax eligible compensation EBP, Participant Contribution, Pretax, Maximum Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, Pretax, Maximum Contribution to Eligible Compensation, Percentage EBP, Description of Plan and Accounting Change [Abstract] Schedule of Investments Carried at Fair Value EBP, Investment, Fair Value and NAV [Table Text Block] Maximum number of loans outstanding for notes receivable from participants EBP, Note Receivable From Participant, Maximum Number Of Loans Outstanding EBP, Note Receivable From Participant, Maximum Number Of Loans Outstanding Investments [Domain] Investments [Domain] Use of Estimates EBP, Use of Estimate [Policy Text Block] Schedule H, Line 4i - Schedule of Assets (Held at End of Year) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Contributions receivable: EBP, Contribution, Receivable [Abstract] EBP, Contribution, Receivable Employer's EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Minimum Minimum [Member] Investment Type [Axis] Investment Type [Axis] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] DESCRIPTION OF THE PLAN EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] Interest EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Investment RTX common stock EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Accounting Policy [Table] EBP, Accounting Policy [Table] Total additions EBP, Change in Net Asset Available for Benefit, Increase Investment income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Short-term investments Short-Term Investments [Member] Investment, Identifier [Axis] Investment, Identifier [Axis] Vesting period for employer contributions EBP, Employer Contribution Vesting Service Period EBP, Employer Contribution Vesting Service Period Net assets available for benefits EBP, Asset Held for Investment Risks and Uncertainties EBP, Risk and Uncertainty [Policy Text Block] Document Information [Line Items] Document Information [Line Items] Percentage of participant compensation matched EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] EBP, Tax Status [Table] EBP, Tax Status [Table] Net increase EBP, Change in Net Asset Available for Benefit, Increase (Decrease) RELATED-PARTY AND PARTY-IN-INTEREST TRANSACTIONS EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] Employer's EBP, Employer Contribution, Receivable Pre-tax automatic deferral rate EBP, Participant Contribution, Automatic, Deferral Rate Distributions to participants or beneficiaries Distributions to participants or beneficiaries per the financial statements EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Dividends Dividend income EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Investments, current value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP 039 EBP 039 [Member] EBP 039 Target-Date Retirement Funds EBP, Target-Date Retirement Funds [Member] EBP, Target-Date Retirement Funds EBP, Accounting Policy [Line Items] EBP, Accounting Policy [Line Items] EBP, Tax Status [Abstract] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Plan Expenses EBP, Expense [Policy Text Block] Distributions to participants or beneficiaries per Form 5500 EBP, Form 5500 Caption, Benefit Payment and Payments to Provide Benefits Less: Deemed distributions of participant loans at December 31, 2024 EBP, Reconciliation to Form 5500, Payment to Participant, Prior Period, Decrease from Deemed Distribution RECONCILIATION OF FINANCIAL STATEMENTS TO FORM 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Notes receivable from participants, current value EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution Investment Valuation and Income Recognition EBP, Investment [Policy Text Block] Participants' EBP, Participant Contribution, Receivable Document Type Document Type PLAN TERMINATION EBP, Plan Termination [Text Block] Entity Central Index Key Entity Central Index Key Interest rate for notes receivable from participants Notes receivable from participants, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] Deductions from net assets attributed to: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Forfeitures used to fund RTX's contributions EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Notes receivable from participants EBP, Note Receivable from Participant Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] SUMMARY OF ACCOUNTING PRINCIPLES EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Basis spread on variable rate for notes receivable from participants EBP, Participant Loan, Basis Spread On Variable Rate EBP, Participant Loan, Basis Spread On Variable Rate Investments purchased EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost Maximum contribution amount based on pre-tax eligible compensation EBP, Participant Contribution, Pretax, Maximum Annual Compensation, Amount Subsequent Events EBP, Subsequent Event [Policy Text Block] TAX STATUS EBP, Tax Status [Text Block] Maximum percentage to vested balance for notes receivable from participants EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Highly Liquid Short-Term Investments Highly Liquid Short-Term Investments [Member] Highly Liquid Short-Term Investments Period used for deduction from maximum borrowing amount for highest loan balance for notes receivable from participants EBP, Note Receivable From Participant, Account, Maximum Borrowing, Deduction For Highest Balance, Period EBP, Note Receivable From Participant, Account, Maximum Borrowing, Deduction For Highest Balance, Period Document Information [Table] Document Information [Table] Notes Receivable from Participants EBP, Note Receivable from Participant [Policy Text Block] Net appreciation in the fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Level 3 Fair Value, Inputs, Level 3 [Member] Maximum contribution as a percentage of after-tax eligible compensation EBP, Participant Contribution, After Tax, Maximum Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, After Tax, Maximum Contribution to Eligible Compensation, Percentage Net assets available for benefits Net assets available for benefits December 31, 2024 Net assets available for benefits December 31, 2025 Net assets available for benefits per the financial statements EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] Forfeited non-vested account balance EBP, Forfeited Nonvested Account Employer contribution matching percentage EBP, Employer Contribution, Matching Percentage Net assets available for benefits per Form 5500 EBP, Form 5500 Caption, Net Assets EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] Notes receivable from participants, cost EBP, Asset Held for Investment, Participant Loan, Cost EBP, Asset Held for Investment, Participant Loan, Cost EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items] Add: Deemed distributions of participant loans at December 31, 2025 EBP, Reconciliation to Form 5500, Payment to Participant, Current Period, Increase from Deemed Distribution Employer Matching Contribution for First 3% EBP, Employer Matching Contribution, Percentage One [Member] EBP, Employer Matching Contribution, Percentage One