Legal Entity [Axis] STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS [Abstract] Total receivables NET ASSETS AVAILABLE FOR BENEFITS NET ASSETS AVAILABLE FOR BENEFITS, BEGINNING OF YEAR NET ASSETS AVAILABLE FOR BENEFITS, END OF YEAR STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS [Abstract] Total investment income (loss) Total contributions Total additions (deductions) Total deductions CHANGE IN NET ASSETS AVAILABLE FOR BENEFITS DESCRIPTION OF PLAN [Abstract] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] FAIR VALUE MEASUREMENTS [Abstract] Fair Value Hierarchy and NAV [Axis] Investment Type [Axis] Statistical Measurement [Axis] RELATED-PARTY TRANSACTIONS AND PARTY IN INTEREST TRANSACTIONS [Abstract] TAX STATUS [Abstract] RISKS AND UNCERTAINTIES [Abstract] SCHEDULE OF DELINQUENT PARTICIPANT CONTRIBUTIONS [Abstract] SCHEDULE H, LINE 4i – SCHEDULE OF ASSETS (HELD AT END OF YEAR) [Abstract] Document Type Document Period End Date Document Fiscal Year Focus Entity Registrant Name Entity Central Index Key Amendment Flag ASSETS: Investments, at fair value Fair Value Receivables: Notes receivable from participants Employer contributions ADDITIONS TO NET ASSETS ATTRIBUTED TO: Investment income (loss): Net appreciation (depreciation) of investments Interest and dividend income Interest income on notes receivable from participants Contributions: Participants Employer Rollovers DEDUCTIONS FROM NET ASSETS ATTRIBUTED TO: Benefits paid to participants Administrative expenses TRANSFER OF ASSETS, NET Enpro Inc. Retirement Savings Plan [Member] DESCRIPTION OF PLAN SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES FAIR VALUE MEASUREMENTS Investments Measured at Fair Value Unfunded Commitments Redemption Frequency (if currently eligible) Description Redemption Notice Period RELATED-PARTY TRANSACTIONS AND PARTY IN INTEREST TRANSACTIONS PLAN TERMINATION TAX STATUS RISKS AND UNCERTAINTIES PROHIBITED TRANSACTIONS SCHEDULE H, LINE 4a - SCHEDULE OF DELINQUENT PARTICIPANT CONTRIBUTIONS Participant Contributions Transferred Late to Plan Remittances of participant contributions and loan repayments that were in excess of the time period described by the Department of Labor's Rules and Regulations Contributions Not Corrected Contributions Corrected Outside VFCP Contributions Pending Correction in VFCP Total Fully Corrected Under VFCP and PTE 2002-51 SCHEDULE H, LINE 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR) Identity of issuer, borrower, lessor or similar party Current Value Description of investment Party-in-interest Participant Loans Participant Loans, interest rate Total Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] Mutual Funds [Member] Enpro Inc. Common Stock [Member] Interest-Bearing Cash [Member] Self-Directed Investments [Member] Investments In Fair Value Hierarchy [Member] Collective Trust Fund [Member] Level 1 [Member] Level 2 [Member] Level 3 [Member] Fair Value Measured at Net Asset Value Per Share [Member] Collective Trust Funds - Target Date [Member] Minimum [Member] Maximum [Member] Collective Trust Funds - Income [Member] Collective Trust Funds - Stable Value [Member] Collective Trust Funds - Small-Mid Cap [Member] Investment, Identifier [Axis] Participant Loans [Member] EBP, Related Party and Party-in-Interest [Axis] Plan document description Employees hours of service to completed to be eligible to participate in the Plan (in Hours) Participants minimum contribution percentage of annual eligible compensation Participants maximum contribution percentage of annual eligible compensation Minimum age participants will be eligible to make catch-up contributions (in Age) Deferral rate Employer matches percentage of employee contributions Maximum percentage of participant's eligible compensation that are matched by Employer at a rate of 100% Additional contribution by Employer to certain eligible employees Vesting percentage of Employer's additional 2% contributions after three years of service Vesting period of Employer's additional 2% contributions Minimum amount participants may borrow from their vested account balance (in Dollars) Maximum amount participants may borrow from their vested account balance (in Dollars) Maximum percentage of vested account balance that participants may borrow Notes receivable from participants, spread on prime rate Forfeited non-vested accounts balances (in Dollars) Forfeited non-vested accounts used to reduce Employer's contributions (in Dollars) Allowance for credit losses Participants accounts would become 100% vested in the event of Plan termination IRS determination letter received Tax exempt status EIN EIN: PLAN NUMBER PLAN NAME Basis of Accounting Use of Accounting Estimates Investment Valuation and Income Recognition Contributions Notes Receivable from Participants Payment of Benefits Administrative Expenses Subsequent Events Temporary or Part-Time Employees [Member] Entity [Domain] EBP, Statement of Net Asset Available for Benefit [Table] STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS [Abstract] EBP, Description of Plan [Table] DESCRIPTION OF PLAN [Abstract] EBP, Accounting Policy [Table] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract] EBP, Investment, Fair Value and NAV [Table] FAIR VALUE MEASUREMENTS [Abstract] EBP, Related Party and Party-in-Interest Transactions [Table] RELATED-PARTY TRANSACTIONS AND PARTY IN INTEREST TRANSACTIONS [Abstract] EBP, Tax Status [Table] TAX STATUS [Abstract] EBP, Risk and Uncertainty [Table] RISKS AND UNCERTAINTIES [Abstract] SCHEDULE OF DELINQUENT PARTICIPANT CONTRIBUTIONS [Table] SCHEDULE OF DELINQUENT PARTICIPANT CONTRIBUTIONS [Abstract] EBP, Schedule of Delinquent Participant Contribution [Table] EBP, Schedule of Asset Held for Investment [Table] SCHEDULE H, LINE 4i – SCHEDULE OF ASSETS (HELD AT END OF YEAR) [Abstract] EBP, Accounting Policy [Line Items] Fair Value Hierarchy and NAV [Domain] Investments [Domain] Statistical Measurement [Domain] EBP, Related Party and Party-in-Interest [Domain] DESCRIPTION OF PLAN [Abstarct] The entire disclosure for prohibited transactions to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Percentage of employer additional contribution on eligible participant contribution to employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Percentage of employer contribution vesting schedule three years of service. The amount of spread, margin, or percentage points above or below a referenced variable interest rate used to determine the interest rate charged on participant notes receivable. Percentage of a participant’s account balance that is nonforfeitable upon termination of the employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Percentage of minimum pretax annual compensation that participant in employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), is permitted to contribute to total pretax annual compensation. The age at which participants become eligible for contributions under employee benefit plan. The number of hours of service a participant must complete in order to become eligible to participate in the plan. The period an employee must work before becoming fully vested, 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Income attributable to investments in collective trust funds held by the employee benefit plan. Collective trust funds that invest primarily in equity securities of small- and mid-capitalization companies. Collective trust funds that invest primarily in stable value products and are designed to preserve principal while providing a reasonable rate of return to participants. Regulated trust, responsible for collective investment and reinvestment of asset from employee benefit plan maintained by more than one employer or controlled group. Part-time and temporary employees who are subject to the annual minimum hours worked requirement to become eligible to participate in the plan. State Street Target Retirement Income Securities Lending Series Fund Class VI [Member] American Funds EuroPacific Growth Fund Class R-6 [Member] State Street Target Retirement 2060 Class VI [Member] State Street Target Retirement 2040 Class VI [Member] Mutual Fund [Member] Vanguard Total International Stock Index Fund Institutional Shares [Member] Collective Trust Fund [Member] Nuveen Winslow Large-Cap Growth ESG Fund Class I [Member] Vanguard Total Stock Market Index Fund Institutional Shares [Member] State Street Target Retirement 2065 Class VI [Member] Enpro Inc. Common Stock [Member] Schwab US Treasury Money Fund [Member] State Street Target Retirement 2025 Class VI [Member] State Street Target Retirement 2045 Class VI [Member] Personal Choice Retirement Account [Member] Loomis Sayles Core Plus Fixed Income Class F [Member] Qualified Plan [Member] State Street Target Retirement 2055 Class VI [Member] Vanguard Total Bond Market Index Fund Institutional Shares [Member] Self-Directed Investments [Member] Dodge & Cox Stock Fund Class X [Member] Employer Securities [Member] Invesco Stable Value Class B1 [Member] State Street Target Retirement 2030 Class VI [Member] William Blair Small-Mid Cap Growth CIT Class IV [Member] State Street Target Retirement 2035 Class VI [Member] DFA U.S Targeted Value Class I [Member] State Street Target Retirement 2050 Class VI [Member] Interest Bearing Cash [Member] EBP, Subsequent Event [Policy Text Block] Investments In Fair Value Hierarchy Member EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Participant Contribution, Automatic, Deferral Rate EBP, Employer Contribution, Participant Compensation Matched, Percentage Fair Value, Inputs, Level 3 [Member] Employee Benefit Plan Participant Minimum Age Eligible To Make Catch Up Contributions EBP, Tax Qualification Status [Extensible Enumeration] EBP, Employer Contribution, Matching Percentage EBP, Plan Number EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] EBP, Note Receivable from Participant [Policy Text Block] EBP, Schedule of Delinquent Participant Contribution, Pending Correction in VFCP EBP, Fair Value, Investment, NAV, Redemption, Description Participant Loans Member EBP, Investment, Fair Value and NAV [Table Text Block] EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Employee Benefit Plan Collective Trust Funds Target Date Member Employee Benefit Plan Collective Trust Funds Small Mid Cap Member EBP, Description, Available [true false] Employee Benefit Plan Participant Service Completed To Be Eligible To Participate In Plan EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Expense [Policy Text Block] EBP, Related Party and Party-in-Interest Transactions [Line Items] Fair Value, Inputs, Level 1 [Member] EBP, Change in Net Asset Available for Benefit, Increase Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense EBP, Summary of Accounting Policy [Text Block] EBP, Tax Status [Text Block] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] EBP, Note Receivable from Participant EBP, Receivable EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Fair Value Measured at Net Asset Value Per Share [Member] EBP, Change in Net Asset Available for Benefit, Increase from Contribution EBP, Schedule of Delinquent Participant Contribution, Corrected EBP, Fair Value, Investment, NAV, Investee Investment Strategy, Description EBP, Schedule of Delinquent Participant Contribution [Line Items] EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount EBP, Schedule of Delinquent Participant Contribution [Table Text Block] EBP, Investment, Current Value, Type [Extensible Enumeration] EBP, Asset [Abstract] EBP, Use of Estimate [Policy Text Block] EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage EBPProhibited Transactions Text Block Employee Benefit Plan Collective Trust Funds Stable Value Member EBP, Change in Net Asset Available for Benefit, Transfer to (from) Plan EBP, Schedule of Delinquent Participant Contribution, Not Corrected EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Asset Held for Investment, Participant Loan, after Deemed Distribution EBP, Description of Plan [Text Block] Document Fiscal Year Focus Employee Benefit Plan Part Time And Temporary Employees Member EBP, Schedule of Delinquent Participant Contribution, Transferred Late to Plan EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Employee Benfit Plan Employer Contribution Vesting Period EBP, Forfeited Nonvested Account Minimum [Member] EBP, Investment, Issuer Name [Extensible Enumeration] EBP, Plan Termination [Text Block] EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] EBP, Asset Held for Investment, Party-in-Interest [true false] EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Employee Benefit Plan Employer Contribution Additional Percentage Fair Value, Inputs, Level 2 [Member] Employee Benefit Plan Note Receivable From Participant Account Basis Spread Variable Rate Employee Benefit Plan Collective Trust Funds Income Member EBP, Risk and Uncertainty [Text Block] EBP, Fair Value, Investment, NAV, Redemption, Notice Period EBP, Change in Net Asset Available for Benefit, Decrease Employee Benefit Plan Participant Contribution Pretax Minimum Annual Compensation To Total Compensation Percentage EBP, Basis of Accounting [Policy Text Block] EBP, Investment, Fair Value and NAV [Line Items] EBP, Asset Held for Investment EBP, Receivable [Abstract] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Net Asset Available for Benefit EBP, Investment [Policy Text Block] EBP, Schedule of Delinquent Participant Contribution, Corrected Outside VFCP Maximum [Member] EBP, Schedule of Asset Held for Investment [Line Items] Document Type EBP, Employer Contribution, Receivable EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment Entity Tax Identification Number EBP, Contribution [Policy Text Block] Amendment Flag EBP, Tax Status [Line Items] Document Period End Date Employee Benefit Plan Employer Contribution Vesting Schedule Three Years Of Service Percentage EBP, Investment, Fair Value and NAV [Text Block] EBP, Schedule of Asset Held for Investment [Table Text Block] EBP, Risk and Uncertainty [Line Items] Entity Central Index Key EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Employee Benefit Plan Participant Account Vested Percentage Upon Plan Termination EBP, Fair Value, Investment, NAV, Unfunded Commitment Investment, Identifier [Axis] EBP, Forfeited Nonvested Account, Decrease from Employer Contribution EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover EBP, Plan Name EBP, Payment to Participant [Policy Text Block] Entity Registrant Name EBP004 Member EBP, Note Receivable from Participant, Allowance for Credit Loss EBP, Change in Net Asset Available for Benefit, Increase (Decrease) EBP, Tax Determination Letter, Obtained [true false]