Plan Description	12 Months Ended
Dec. 31, 2025
EBP Represented Employee
EBP, Description of Plan [Line Items]
Plan Description	Plan Description The following description of the General Dynamics Corporation 401(k) Plan for Represented Employees (the Plan) provides only general information. Participants should refer to the Plan Document for a more complete description of the Plan’s provisions. (a)General The Plan is a defined contribution plan covering eligible employees of General Dynamics Corporation (the Company, Employer, Plan Administrator, or Plan Sponsor) and its subsidiaries. Only employees subject to a collective bargaining agreement are eligible to participate in this Plan. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA). The Plan participates in the General Dynamics Corporation 401(k) Plan Master Trust (Master Trust) along with certain other plans also sponsored by the Company. (b)Plan Administration Fidelity Management Trust Company (Fidelity) holds the Plan’s assets as the Plan’s trustee and Fidelity Workplace Services, LLC is the Plan’s recordkeeper. (c)Contributions Employees are eligible to participate in the Plan upon hire. Effective January 1, 2025, participants may generally contribute from 1% up to 75% of eligible compensation as pre-tax deferrals, Roth deferrals or after-tax contributions, up to the statutory limits defined by the Internal Revenue Code (IRC), or at such other limit based on the participant's business unit as specified in the Plan Document. The Plan has an automatic enrollment feature which is applied to new employees of certain business units as defined in the Plan Document. Participants who have attained age 50 before the end of the Plan year are eligible to make catch-up contributions. Participants may also contribute amounts representing distributions from other qualified plans (rollovers). The Employer matching contribution varies based on the business unit with whom the participant is employed. Participants at certain business units may be eligible to receive an Employer discretionary contribution based on a percentage of their eligible compensation or other applicable formula. At December 31, 2025 and 2024, $8,902,904 and $8,064,221, respectively, of such discretionary contributions were included as a receivable in the Plan’s financial statements. (d)Participant Accounts Each participant directs his or her contributions to be invested in various funds. Changes to investment elections can be made according to Plan rules. Each participant’s account is credited with the participant’s contribution and Employer’s contribution and allocations of Plan earnings and losses, less an allocation of administrative expenses. The benefit to which a participant is entitled is the vested balance of his or her account. The assets of the Plan that are invested in the General Dynamics Corporation Common Stock are in a separate fund (the GD Stock Fund) which constitutes an Employee Stock Ownership Plan (an ESOP) under certain sections of the IRC, as amended. Participants are given the right to take a distribution of regularly scheduled dividends of the General Dynamics Corporation Common Stock held in the GD Stock Fund in cash or leave the funds in the Plan to be reinvested in General Dynamics Corporation Common Stock, as provided by the Plan. (e)Vesting Participants’ contributions and actual earnings thereon are always 100% vested. Vesting in any Employer matching or discretionary contributions varies by business unit but does not exceed three years. (f)Notes Receivable from Participants The Plan permits active participants to borrow the lesser of (i) $50,000 less the highest outstanding note receivable (or participant loans or loan) balance during the last 12 months or (ii) 50% of the vested amount in their accounts (subject to limits defined in the Plan Document and under the IRC). Loans are secured by the remaining balance in the participants’ accounts. Participants are required to repay the loan by regular payroll deductions over a period of up to five years. The Plan also offers primary residence loans (with terms up to 20 years). Participants can have up to two loans outstanding at any one time, one of which may be a primary residence loan. Loans are issued at the U.S. prime rate of interest. Participant loans are recorded at amortized cost, which is the remaining unpaid principal balance plus any accrued but unpaid interest. Delinquent loans are reclassified as distributions based upon the terms of the Plan Document. (g)Payment of Benefits Participants are eligible to receive benefit payments upon retirement, death, disability or termination of employment. On termination of service, a participant (or designated beneficiary) may elect to (a) receive a lump‑sum amount equal to the value of the participant’s vested interest in his or her account, (b) roll over the value of the participant’s vested interest in his or her account into an eligible retirement plan, (c) receive annual or monthly fixed-amount installment payments, or (d) receive a partial distribution of his or her total vested account balance. Active participants may be eligible to receive in‑service or hardship withdrawals, or withdrawals allowed under the IRC for participants that reach age 59½, subject to the provisions in the Plan Document. (h)Forfeited Accounts Forfeitures are used to reduce Employer contributions. At December 31, 2025 and 2024, participants’ forfeited nonvested accounts were not material. Forfeitures used during 2025 to reduce Employer contributions were not material. (i)Net Transfers Within Master Trust Net transfers to and from plans within the Master Trust are a result of individual participants transferring jobs within the Company which causes them to become a participant in a different plan that also participates in the Master Trust. (j)Risks and Uncertainties The Plan invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market, liquidity, and credit risks, as well as the risks associated with global events. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the Statements of Net Assets Available for Benefits.

The following description of the General Dynamics Corporation 401(k) Plan for Represented Employees (the Plan) provides only general information. Participants should refer to the Plan Document for a more complete description of the Plan’s provisions.

The Plan is a defined contribution plan covering eligible employees of General Dynamics Corporation (the Company, Employer, Plan Administrator, or Plan Sponsor) and its subsidiaries. Only employees subject to a collective bargaining agreement are eligible to participate in this Plan. The Plan is subject to the provisions of the Employee Retirement Income Security Act of 1974 (ERISA). The Plan participates in the General Dynamics Corporation 401(k) Plan Master Trust (Master Trust) along with certain other plans also sponsored by the Company.

Employees are eligible to participate in the Plan upon hire. Effective January 1, 2025, participants may generally contribute from 1% up to 75% of eligible compensation as pre-tax deferrals, Roth deferrals or after-tax contributions, up to the statutory limits defined by the Internal Revenue Code (IRC), or at such other limit based on the participant's business unit as specified in the Plan Document. The Plan has an automatic enrollment feature which is applied to new employees of certain business units as defined in the Plan Document. Participants who have attained age 50 before the end of the Plan year are eligible to make catch-up contributions. Participants may also contribute amounts representing distributions from other qualified plans (rollovers). The Employer matching contribution varies based on the business unit with whom the participant is employed.

Participants at certain business units may be eligible to receive an Employer discretionary contribution based on a percentage of their eligible compensation or other applicable formula. At December 31, 2025 and 2024, $8,902,904 and $8,064,221, respectively, of such discretionary contributions were included as a receivable in the Plan’s financial statements.

Each participant directs his or her contributions to be invested in various funds. Changes to investment elections can be made according to Plan rules. Each participant’s account is credited with the participant’s contribution and Employer’s contribution and allocations of Plan earnings and losses, less an allocation of administrative expenses. The benefit to which a participant is entitled is the vested balance of his or her account.

The assets of the Plan that are invested in the General Dynamics Corporation Common Stock are in a separate fund (the GD Stock Fund) which constitutes an Employee Stock Ownership Plan (an ESOP) under certain sections of the IRC, as amended. Participants are given the right to take a distribution of regularly scheduled dividends of the General Dynamics Corporation Common Stock held in the GD Stock Fund in cash or leave the funds in the Plan to be reinvested in General Dynamics Corporation Common Stock, as provided by the Plan.

Participants’ contributions and actual earnings thereon are always 100% vested. Vesting in any Employer matching or discretionary contributions varies by business unit but does not exceed three years.

The Plan permits active participants to borrow the lesser of (i) $50,000 less the highest outstanding note receivable (or participant loans or loan) balance during the last 12 months or (ii) 50% of the vested amount in their accounts (subject to limits defined in the Plan Document and under the IRC). Loans are secured by the remaining balance in the participants’ accounts. Participants are required to repay the loan by regular payroll deductions over a period of up to five years. The Plan also offers primary residence loans (with terms up to 20 years). Participants can have up to two loans outstanding at any one time, one of which may be a primary residence loan. Loans are issued at the U.S. prime rate of interest. Participant loans are recorded at amortized cost, which is the remaining unpaid principal balance plus any accrued but unpaid interest. Delinquent loans are reclassified as distributions based upon the terms of the Plan Document.

Participants are eligible to receive benefit payments upon retirement, death, disability or termination of employment. On termination of service, a participant (or designated beneficiary) may elect to (a) receive a lump‑sum amount equal to the value of the participant’s vested interest in his or her account, (b) roll over the value of the participant’s vested interest in his or her account into an eligible retirement plan, (c) receive annual or monthly fixed-amount installment payments, or (d) receive a partial distribution of his or her total vested account balance. Active participants may be eligible to receive in‑service or hardship withdrawals, or withdrawals allowed under the IRC for participants that reach age 59½, subject to the provisions in the Plan Document.

Forfeitures are used to reduce Employer contributions. At December 31, 2025 and 2024, participants’ forfeited nonvested accounts were not material. Forfeitures used during 2025 to reduce Employer contributions were not material.

Net transfers to and from plans within the Master Trust are a result of individual participants transferring jobs within the Company which causes them to become a participant in a different plan that also participates in the Master Trust.

The Plan invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market, liquidity, and credit risks, as well as the risks associated with global events. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the Statements of Net Assets Available for Benefits.