| Cover | 12 Months Ended |
| Dec. 31, 2022 | |
| Cover [Abstract] | |
| Document Type | DEF 14A |
| Entity Registrant Name | EnPro Industries, Inc. |
| Entity Central Index Key | 0001164863 |
| Amendment Flag | false |
| Pay vs Performance Disclosure - USD ($) | 12 Months Ended | |||
| Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | ||
| Pay vs Performance Disclosure [Table] | ||||
| Pay vs Performance [Table Text Block] | (1) (2) (1)(3) (2)(3) (4) (3)(4) (5) (6) (7) (8) Value of Initial Fixed $100 Investment Based on: Year Summary Compensation Table Total for First PEO (1) Summary Compensation Table Total for Second PEO (2) Compensation Actually Paid to First PEO (1)(3) Compensation Actually Paid to Second PEO (2)(3) Average Summary Compensation Table Total for Non-PEO NEOs (4) Average Compensation Actually Paid to Non-PEO NEOs (3)(4) Total Shareholder Return (5) Peer Group Total Shareholder Return (6) Net Income (7) (h) Adjusted EBITDA (8) (i) (a) ($) (b) ($) (b) ($) (c) ($) (c) ($) (d) ($) (e) ($) (f) ($) (g) ($ in millions 2022 N/A 5,866,992 N/A 5,857,402 1,353,715 1,244,066 169.41 138.76 202.3 295.9 2021 9,311,014 3,251,529 1,083,322 4,579,554 1,857,663 3,117,325 169.68 145.03 178.3 216.0 2020 4,403,537 N/A 6,538,919 N/A 1,505,024 1,724,967 115.05 115.68 178.0 173.6 | |||
| Peer Group Issuers, Footnote [Text Block] | Represents the TSR of the S&P SmallCap 600 Capital Goods (Industry Group) Index for the period beginning on the last trading day of the year preceding the earliest year presented in the table and ending the last trading day of the covered year, which includes dividends paid during the relevant period. The TSR of the S&P SmallCap 600 Capital Goods (Industry Group) Index is used in determining rTSR under our Performance Share Awards. | |||
| Adjustment To PEO Compensation, Footnote [Text Block] | Eric A. Vaillancourt | |||
| Non-PEO NEO Average Total Compensation Amount | [1] | $ 1,353,715 | $ 1,857,663 | $ 1,505,024 |
| Non-PEO NEO Average Compensation Actually Paid Amount | [1],[2] | $ 1,244,066 | 3,117,325 | 1,724,967 |
| Adjustment to Non-PEO NEO Compensation Footnote [Text Block] | (4) The following table lists the individuals who comprise the Non-PEO NEOs in each of the covered years: 2022 2021 2020 J. Milton Childress II J. Milton Childress II J. Milton Childress II Robert S. McLean Robert S. McLean Robert S. McLean Steven R. Bower Steven R. Bower Jerry L. Johnson Ronald R. Angelillo Susan E. Sweeney Susan E. Sweeney Susan E. Sweeney | |||
| Compensation Actually Paid vs. Total Shareholder Return [Text Block] | ||||
| Compensation Actually Paid vs. Net Income [Text Block] | ||||
| Compensation Actually Paid vs. Company Selected Measure [Text Block] | ||||
| Tabular List [Table Text Block] | Performance measures used to link performance to executive compensation We have listed below the four performance measures that represent the most important metrics we used to link Compensation Actually Paid to our NEOs for 2022: · adjusted EBITDA; · Cash Flow ROIC; · rTSR; and · common stock trading price. | |||
| Total Shareholder Return Amount | [3] | $ 169.41 | 169.68 | 115.05 |
| Peer Group Total Shareholder Return Amount | [4] | 138.76 | 145.03 | 115.68 |
| Net Income (Loss) | [5] | $ 202,300,000 | $ 178,300,000 | $ 178,000,000 |
| Company Selected Measure Amount | [6] | 295,900,000 | 216,000,000 | 173,600,000 |
| Measure [Axis]: 1 | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Measure Name | adjusted EBITDA; | |||
| Non-GAAP Measure Description [Text Block] | Adjusted EBITDA is a financial measure selected by the Compensation and Human Resources Committee for evaluating performance with respect to the annual incentive compensation plan. Adjusted EBITDA is calculated by adding interest, income tax, depreciation and amortization expenses to earnings and further adding certain selected expenses that the Compensation and Human Resources Committee believes do not reflect normal operating conditions and subtracting certain selected income items that such committee believes do not reflect normal operating conditions. Adjusted EBITDA is calculated in a manner consistent with adjusted EBITDA as presented by the company in its quarterly and annual earnings announcements, with additional adjustments to eliminate the impact of acquisitions and dispositions occurring during the year and certain other items and the translation impact of foreign currency exchange. Adjusted EBITDA is not a financial measure that has been prepared in conformity with GAAP. While adjusted EBITDA is one factor that we use in internal evaluations of the overall performance of our businesses, we acknowledge that there are many items that impact a company’s reported results and the adjustments reflected in adjusted EBITDA are not intended to present all items that may have impacted these results. In addition, adjusted EBITDA as calculated for this purpose is not necessarily comparable to similarly titled measures used by other companies. | |||
| Measure [Axis]: 2 | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Measure Name | Cash Flow ROIC; | |||
| Measure [Axis]: 3 | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Measure Name | rTSR; and | |||
| Measure [Axis]: 4 | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Measure Name | common stock trading price. | |||
| P E O 2 [Member] | Adjustment for Summary Compensation Table Pension | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| P E O 2 [Member] | Amount added for current year service cost | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| P E O 2 [Member] | Amount added for prior service cost impacting current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| P E O 2 [Member] | Total Adjustments for Pension | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| P E O 2 [Member] | Adjustment for grant date values in summary compensation table | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (3,413,231) | (1,826,576) | |
| P E O 2 [Member] | Year-end fair value of unvested awards granted in current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 2,498,644 | 2,039,557 | |
| P E O 2 [Member] | Year-over-year difference of year-end fair values for unvested awards granted in prior years | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 895,510 | 1,033,352 | |
| P E O 2 [Member] | Fair values at vest date for awards granted and vested in current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | |||
| P E O 2 [Member] | Difference in fair values between year-end fair values and vest date fair values for awards granted in prior years | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (1,133) | 64,034 | |
| P E O 2 [Member] | Forfeitures during current year equal to prior year-end fair value | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | |||
| P E O 2 [Member] | Dividends or dividend equivalents not otherwise included in total compensation | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 10,619 | 17,659 | |
| P E O 2 [Member] | Total adjustments for Equity Awards | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (9,590) | 1,328,025 | |
| Non-PEO NEO [Member] | Adjustment for Summary Compensation Table Pension | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | $ (153,049) | |||
| Non-PEO NEO [Member] | Amount added for current year service cost | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | 12,694 | |||
| Non-PEO NEO [Member] | Amount added for prior service cost impacting current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| Non-PEO NEO [Member] | Total Adjustments for Pension | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | (140,086) | |||
| Non-PEO NEO [Member] | Adjustment for grant date values in summary compensation table | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (468,386) | (851,809) | (541,703) |
| Non-PEO NEO [Member] | Year-end fair value of unvested awards granted in current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 340,382 | 1,140,207 | 682,572 |
| Non-PEO NEO [Member] | Year-over-year difference of year-end fair values for unvested awards granted in prior years | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 108,474 | 953,890 | 227,294 |
| Non-PEO NEO [Member] | Fair values at vest date for awards granted and vested in current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | |||
| Non-PEO NEO [Member] | Difference in fair values between year-end fair values and vest date fair values for awards granted in prior years | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (9,581) | 12,931 | (12,250) |
| Non-PEO NEO [Member] | Forfeitures during current year equal to prior year-end fair value | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (90,838) | ||
| Non-PEO NEO [Member] | Dividends or dividend equivalents not otherwise included in total compensation | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 10,300 | 4,443 | 4,117 |
| Non-PEO NEO [Member] | Total adjustments for Equity Awards | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (109,649) | 1,259,663 | 360,029 |
| P E O 1 [Member] | Adjustment for Summary Compensation Table Pension | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| P E O 1 [Member] | Amount added for current year service cost | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| P E O 1 [Member] | Amount added for prior service cost impacting current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| P E O 1 [Member] | Total Adjustments for Pension | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | ||||
| P E O 1 [Member] | Adjustment for grant date values in summary compensation table | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (5,756,170) | (2,300,000) | |
| P E O 1 [Member] | Year-end fair value of unvested awards granted in current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 751,888 | 3,187,181 | |
| P E O 1 [Member] | Year-over-year difference of year-end fair values for unvested awards granted in prior years | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 363,814 | 1,328,024 | |
| P E O 1 [Member] | Fair values at vest date for awards granted and vested in current year | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | |||
| P E O 1 [Member] | Difference in fair values between year-end fair values and vest date fair values for awards granted in prior years | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 82,670 | (102,366) | |
| P E O 1 [Member] | Forfeitures during current year equal to prior year-end fair value | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (3,684,078) | ||
| P E O 1 [Member] | Dividends or dividend equivalents not otherwise included in total compensation | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | 14,183 | 22,543 | |
| P E O 1 [Member] | Total adjustments for Equity Awards | ||||
| Pay vs Performance Disclosure [Table] | ||||
| Adjustment to Compensation Amount | [7] | (8,227,692) | 2,135,382 | |
| P E O 2 [Member] | ||||
| Pay vs Performance Disclosure [Table] | ||||
| PEO Total Compensation Amount | [8] | 5,866,992 | 3,251,529 | |
| PEO Actually Paid Compensation Amount | [2],[8] | $ 5,857,402 | 4,579,554 | |
| PEO Name | Eric A. Vaillancourt | |||
| P E O 1 [Member] | ||||
| Pay vs Performance Disclosure [Table] | ||||
| PEO Total Compensation Amount | [9] | 9,311,014 | 4,403,537 | |
| PEO Actually Paid Compensation Amount | [2],[9] | $ 1,083,322 | $ 6,538,919 | |
| [1]The following table lists the individuals who comprise the Non-PEO NEOs in each of the covered years:[2]Deductions from, and additions to, total compensation in the summary compensation table, appearing on page 48 by year to calculate Compensation Actually Paid include:[3]Represents the company’s TSR for the period beginning on the last trading day of the year preceding the earliest year presented in the table and ending the last trading day of the covered year, which includes the reinvestment of dividends paid on our common stock during the relevant period.[4]Represents the TSR of the S&P SmallCap 600 Capital Goods (Industry Group) Index for the period beginning on the last trading day of the year preceding the earliest year presented in the table and ending the last trading day of the covered year, which includes dividends paid during the relevant period. The TSR of the S&P SmallCap 600 Capital Goods (Industry Group) Index is used in determining rTSR under our Performance Share Awards.[5]Represents net income of EnPro and its subsidiaries on a consolidated basis, which includes the results of discontinued operations in each of the periods presented.[6]Adjusted EBITDA is a financial measure selected by the Compensation and Human Resources Committee for evaluating performance with respect to the annual incentive compensation plan. Adjusted EBITDA is calculated by adding interest, income tax, depreciation and amortization expenses to earnings and further adding certain selected expenses that the Compensation and Human Resources Committee believes do not reflect normal operating conditions and subtracting certain selected income items that such committee believes do not reflect normal operating conditions. Adjusted EBITDA is calculated in a manner consistent with adjusted EBITDA as presented by the company in its quarterly and annual earnings announcements, with additional adjustments to eliminate the impact of acquisitions and dispositions occurring during the year and certain other items and the translation impact of foreign currency exchange. Adjusted EBITDA is not a financial measure that has been prepared in conformity with GAAP. While adjusted EBITDA is one factor that we use in internal evaluations of the overall performance of our businesses, we acknowledge that there are many items that impact a company’s reported results and the adjustments reflected in adjusted EBITDA are not intended to present all items that may have impacted these results. In addition, adjusted EBITDA as calculated for this purpose is not necessarily comparable to similarly titled measures used by other companies.[7]Equity valuation assumptions for calculating Compensation Actually Paid are not materially different from grant date valuation assumptions.[8] Eric A. Vaillancourt | ||||
