Long-Term Debt	6 Months Ended
Jun. 30, 2025
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Senior Secured Credit Facilities On April 9, 2025, we entered into a Second Amendment to Third Amended and Restated Credit Agreement dated as of April 9, 2025 (the “Amended Credit Facility Agreement”) among the Company and our subsidiary, EnPro Holdings, Inc. ("EnPro Holdings"), as borrowers, certain foreign subsidiaries of the Company from time to time party thereto, as designated borrowers, the guarantors party thereto, the lenders party thereto and Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer. The Amended Credit Facility Agreement amended the agreement then governing our senior secured credit facilities and provides for a senior secured revolving credit facility of up to $800.0 million (the “Revolving Credit Facility”), which will mature on April 9, 2030. On April 9, 2025, in connection with our entry into the Amended Credit Facility Agreement, we repaid the remaining outstanding principal amount of term loan borrowings outstanding under the agreement governing our senior secured credit facilities prior to such amendment, funded by borrowings under the Revolving Credit Facility and $59.8 million of available cash. The Amended Credit Facility Agreement provides that we may seek incremental term loans and/or additional revolving credit commitments in an amount equal to the greater of $275.0 million and 100% of consolidated EBITDA for the most recently ended four-quarter period for which we have reported financial results, plus additional amounts based on a consolidated senior secured leverage ratio. Any incremental term loans will be subject to prepayment with the net cash proceeds of non-permitted debt issuances and with the net cash proceeds of certain asset sales and casualty or condemnation events not reinvested in our business or applied to prepay such term loans within a specified period. Borrowings under the Revolving Credit Facility, at our option, bear interest at either (1) an alternate base rate (the highest of (a) the federal funds effective rate plus 0.50%, (b) the prime rate of Bank of America, N.A., and (c) the one-month Term SOFR rate plus 1.00%) or (2) the Term SOFR rate for the applicable interest period plus, in each case, an applicable margin percentage, which initially is 1.375% for Term SOFR borrowings and 0.375% for alternate base rate borrowings and is subject to incremental increase or decrease based on a consolidated total net leverage ratio. In addition, a commitment fee accrues with respect to the unused amount of the Revolving Credit Facility at an annual rate of 0.175% initially, which rate is also subject to incremental increase or decrease based on a consolidated total net leverage ratio. Enpro Inc. and EnPro Holdings are the permitted borrowers under the Amended Credit Facility Agreement. We have the ability to add wholly owned foreign subsidiaries as borrowers under the Revolving Credit Facility. Each of our domestic, consolidated subsidiaries (subject to certain exclusions) is required to guarantee the obligations of the borrowers under the Amended Credit Facility Agreement and, subject to the permitted exceptions, each of the Company’s existing domestic subsidiaries has entered into the Amended Credit Facility Agreement to provide such a guarantee. Borrowings under the Amended Credit Facility Agreement are secured by a first-priority pledge of certain assets. The Amended Credit Facility Agreement contains certain financial covenants and required financial ratios including a maximum consolidated total net leverage ratio and a minimum consolidated interest coverage ratio as defined in the Amended Credit Facility Agreement. We were in compliance with all covenants of the Amended Credit Facility Agreement as of June 30, 2025. The borrowing availability under our Revolving Credit Facility at June 30, 2025 was $770.4 million after giving consideration to $9.6 million of outstanding letters of credit and $20.0 million of outstanding borrowings. Senior Notes On May 29, 2025, we completed the offering of $450 million in aggregate principal amount of 6.125% Senior Notes due 2033 (the “Senior Notes”). The Senior Notes were issued to investors at 100% of the principal amount thereof. The Senior Notes are unsecured, unsubordinated obligations of Enpro Inc. and mature on June 1, 2033. Interest on the Senior Notes accrues at a rate of 6.125% per annum and is payable semi-annually in cash in arrears on June 1 and December 1 of each year, commencing December 1, 2025. The Senior Notes are required to be guaranteed on a senior unsecured basis by each of Enpro’s existing and future direct and indirect domestic subsidiaries that is a borrower under, or guarantees, our indebtedness under the Revolving Credit Facility or guarantees any other Capital Markets Indebtedness (as defined in the indenture governing the Senior Notes) of Enpro or any of the guarantors above a specified threshold. We may, on any one or more occasions, redeem all or a part of the Senior Notes at specified redemption prices plus accrued and unpaid interest. The indenture governing the Senior Notes includes covenants that restrict our ability, subject to specified exceptions and qualifications set forth in the indenture, to incur liens on assets, engage in certain asset sales, including sale and leaseback transactions, and merge, consolidate, transfer or dispose of all or substantially all assets. The indenture further requires us to offer to repurchase the Senior Notes at a price equal to 100% of the principal amount thereof plus accrued and unpaid interest, in the event that the net cash proceeds of certain asset sales are not reinvested in acquisitions, capital expenditures, or used to repay or otherwise reduce specified indebtedness within a specified period, to the extent the remaining net proceeds exceed a specified amount. Each holder of the Senior Notes may require us to repurchase some or all of the Senior Notes held by such holder for cash upon the occurrence of a defined “change of control” event. Our ability to redeem the Senior Notes prior to maturity is subject to certain conditions, including in certain cases the payment of make-whole amounts. We applied a portion of the net proceeds from the sale of the Senior Notes to fund the redemption on June 12, 2025 of all of our outstanding 5.75% Senior Notes due 2026 (having an aggregate principal amount of $350 million) at a redemption price equal to 100% of the aggregate principal amount thereof, plus accrued but unpaid interest to, but not including, the redemption date. We were in compliance with all of the covenants under the indenture governing the Senior Notes as of June 30, 2025. Debt Issuance Costs During the quarter ended June 30, 2025, we capitalized $8.0 million of debt issuance costs in connection with our Amended Credit Facility Agreement and the issuance of our Senior Notes. Additionally, in connection with the redemption of our 5.75% Senior Notes and repayment of the remaining outstanding principal amount of our Term Loan A-2 Facility in the second quarter of 2025, we recognized a $1.7 million loss on extinguishment related to unamortized debt issuance costs recorded in other non-operating expense.

April 9, 2025 (the “Amended Credit Facility Agreement”) among the Company and our subsidiary, EnPro Holdings, Inc. ("EnPro Holdings"), as borrowers, certain foreign subsidiaries of the Company from time to time party thereto, as designated borrowers, the guarantors party thereto, the lenders party thereto and Bank of America, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer.

The Amended Credit Facility Agreement amended the agreement then governing our senior secured credit facilities and provides for a senior secured revolving credit facility of up to $800.0 million (the “Revolving Credit Facility”), which will mature on April 9, 2030. On April 9, 2025, in connection with our entry into the Amended Credit Facility Agreement, we repaid the remaining outstanding principal amount of term loan borrowings outstanding under the agreement governing our senior secured credit facilities prior to such amendment, funded by borrowings under the Revolving Credit Facility and $59.8 million of available cash.

The Amended Credit Facility Agreement provides that we may seek incremental term loans and/or additional revolving credit commitments in an amount equal to the greater of $275.0 million and 100% of consolidated EBITDA for the most recently ended four-quarter period for which we have reported financial results, plus additional amounts based on a consolidated senior secured leverage ratio. Any incremental term loans will be subject to prepayment with the net cash proceeds of non-permitted debt issuances and with the net cash proceeds of certain asset sales and casualty or condemnation events not reinvested in our business or applied to prepay such term loans within a specified period.

Borrowings under the Revolving Credit Facility, at our option, bear interest at either (1) an alternate base rate (the highest of (a) the federal funds effective rate plus 0.50%, (b) the prime rate of Bank of America, N.A., and (c) the one-month Term SOFR rate plus 1.00%) or (2) the Term SOFR rate for the applicable interest period plus, in each case, an applicable margin percentage, which initially is 1.375% for Term SOFR borrowings and 0.375% for alternate base rate borrowings and is subject to incremental increase or decrease based on a consolidated total net leverage ratio. In addition, a commitment fee accrues with respect to the unused amount of the Revolving Credit Facility at an annual rate of 0.175% initially, which rate is also subject to incremental increase or decrease based on a consolidated total net leverage ratio.

Enpro Inc. and EnPro Holdings are the permitted borrowers under the Amended Credit Facility Agreement. We have the ability to add wholly owned foreign subsidiaries as borrowers under the Revolving Credit Facility. Each of our domestic, consolidated subsidiaries (subject to certain exclusions) is required to guarantee the obligations of the borrowers under the Amended Credit Facility Agreement and, subject to the permitted exceptions, each of the Company’s existing domestic subsidiaries has entered into the Amended Credit Facility Agreement to provide such a guarantee.

Borrowings under the Amended Credit Facility Agreement are secured by a first-priority pledge of certain assets. The Amended Credit Facility Agreement contains certain financial covenants and required financial ratios including a maximum consolidated total net leverage ratio and a minimum consolidated interest coverage ratio as defined in the Amended Credit Facility Agreement. We were in compliance with all covenants of the Amended Credit Facility Agreement as of June 30, 2025.

The borrowing availability under our Revolving Credit Facility at June 30, 2025 was $770.4 million after giving consideration to $9.6 million of outstanding letters of credit and $20.0 million of outstanding borrowings.

On May 29, 2025, we completed the offering of $450 million in aggregate principal amount of 6.125% Senior Notes due 2033 (the “Senior Notes”). The Senior Notes were issued to investors at 100% of the principal amount thereof. The Senior Notes are unsecured, unsubordinated obligations of Enpro Inc. and mature on June 1, 2033. Interest on the Senior Notes accrues at a rate of 6.125% per annum and is payable semi-annually in cash in arrears on June 1 and December 1 of each year, commencing December 1, 2025. The Senior Notes are required to be guaranteed on a senior unsecured basis by each of Enpro’s existing and future direct and indirect domestic subsidiaries that is a borrower under, or guarantees, our indebtedness under the Revolving Credit Facility or guarantees any other Capital Markets Indebtedness (as defined in the indenture governing the Senior Notes) of Enpro or any of the guarantors above a specified threshold. We may, on any one or more occasions, redeem all or a part of the Senior Notes at specified redemption prices plus accrued and unpaid interest.

The indenture governing the Senior Notes includes covenants that restrict our ability, subject to specified exceptions and qualifications set forth in the indenture, to incur liens on assets, engage in certain asset sales, including sale and leaseback transactions, and merge, consolidate, transfer or dispose of all or substantially all assets. The indenture further requires us to offer to repurchase the Senior Notes at a price equal to 100% of the principal amount thereof plus accrued and unpaid interest, in the event that the net cash proceeds of certain asset sales are not reinvested in acquisitions, capital expenditures, or used to repay or otherwise reduce specified indebtedness within a specified period, to the extent the remaining net proceeds exceed a specified amount.

Each holder of the Senior Notes may require us to repurchase some or all of the Senior Notes held by such holder for cash upon the occurrence of a defined “change of control” event. Our ability to redeem the Senior Notes prior to maturity is subject to certain conditions, including in certain cases the payment of make-whole amounts.

We applied a portion of the net proceeds from the sale of the Senior Notes to fund the redemption on June 12, 2025 of all of our outstanding 5.75% Senior Notes due 2026 (having an aggregate principal amount of $350 million) at a redemption price equal to 100% of the aggregate principal amount thereof, plus accrued but unpaid interest to, but not including, the redemption date.