EnPro Industries (NPO) 10-Q 5 Nov 21 2021 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2021	Nov. 01, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-31225
Entity Registrant Name	ENPRO INDUSTRIES, INC
Entity Incorporation, State or Country Code	NC
Entity Tax Identification Number	01-0573945
Entity Address, Street	5605 Carnegie Boulevard
Entity Address, Suite	Suite 500
Entity Address, City	Charlotte
Entity Address, State	NC
Entity Address, Postal Zip Code	28209
City Area Code	704
Local Phone Number	731-1500
Title of each class	Common stock, $0.01 par value
Trading Symbol(s)	NPO
Name of each exchange on which registered	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		20,604,848
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001164863
Current Fiscal Year End Date	--12-31

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Net sales	$ 283.1	$ 268.3	$ 861	$ 798
Cost of sales	173.6	173.8	525.1	525.7
Gross profit	109.5	94.5	335.9	272.3
Operating expenses:
Selling, general and administrative	80	73.2	243	214.6
Other	0.9	28.8	5.2	42.9
Total operating expenses	80.9	102	248.2	257.5
Operating income (loss)	28.6	(7.5)	87.7	14.8
Interest expense	(4)	(4)	(12)	(12.6)
Interest income	1.4	0.1	1.8	1.2
Other income (expense)	16.7	(17.2)	18.5	(15.5)
Income (loss) from continuing operations before income taxes	42.7	(28.6)	96	(12.1)
Income tax benefit (expense)	(15.1)	7.3	(21.1)	(2.2)
Income (loss) from continuing operations	27.6	(21.3)	74.9	(14.3)
Income from discontinued operations, including gain on sale, net of tax	0	1.9	0	207.3
Net of tax	27.6	(19.4)	74.9	193
Less: net income attributable to redeemable non-controlling interests	0.1	0.3	0.1	0.5
Net income (loss) attributable to EnPro Industries, Inc.	27.5	(19.7)	74.8	192.5
Comprehensive income (loss)	26.5	(13.1)	77.8	200.8
Less: comprehensive income attributable to redeemable non-controlling interests	0.2	0.5	0.3	2
Comprehensive income (loss) attributable to EnPro Industries, Inc.	26.3	(13.6)	77.5	198.8
Income (loss) attributable to EnPro Industries, Inc. common shareholders:
Income (loss) from continuing operations attributable to EnPro Industries, Inc.	27.5	(21.6)	74.8	(14.8)
Income from discontinued operations, net of tax	0	1.9	0	207.3
Net income (loss) attributable to EnPro Industries, Inc.	$ 27.5	$ (19.7)	$ 74.8	$ 192.5
Basic earnings (loss) per share attributable to EnPro Industries, Inc.:
Continuing operations (in dollars per share)	$ 1.34	$ (1.05)	$ 3.63	$ (0.72)
Discontinued operations (in dollars per share)	0	0.09	0	10.09
Net income per share (in dollars per share)	1.34	(0.96)	3.63	9.37
Diluted earnings (loss) per share attributable to EnPro Industries, Inc.:
Continuing operations (in dollars per share)	1.33	(1.05)	3.61	(0.72)
Discontinued operations (in dollars per share)	0	0.09	0	10.09
Net income per share (in dollars per share)	$ 1.33	$ (0.96)	$ 3.61	$ 9.37

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
OPERATING ACTIVITIES OF CONTINUING OPERATIONS
Net income (loss)	$ 74.9	$ 193
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations:
Income from discontinued operations, net of taxes	0	(207.3)
Taxes paid related to sale of discontinued operations	0	(35.4)
Depreciation	20.5	22.4
Amortization	35.4	29.1
Deferred income taxes	(2.9)	(2.4)
Stock-based compensation	3.4	4.1
Other non-cash adjustments	(14.9)	31.5
Change in assets and liabilities, net of effects of divestitures of businesses:
Accounts receivable, net	(27.7)	(3.4)
Inventories	(15.1)	11.7
Accounts payable	10.9	(5.9)
Other current assets and liabilities	10.3	12.5
Other non-current assets and liabilities	3	(1.5)
Net cash provided by operating activities of continuing operations	97.8	48.4
INVESTING ACTIVITIES OF CONTINUING OPERATIONS
Purchases of property, plant and equipment	(13.4)	(11.8)
Proceeds from sale of businesses, net	38.9	453.9
Other	0.4	(2.6)
Net cash used in investing activities	25.9	439.5
FINANCING ACTIVITIES OF CONTINUING OPERATIONS
Proceeds from debt	0	24.9
Repayments of debt	(3)	(161.4)
Repurchase of common stock	0	(5.3)
Dividends paid	(16.8)	(16.2)
Other	(1.5)	(2)
Net cash used in financing activities of continuing operations	(21.3)	(160)
CASH FLOWS OF DISCONTINUED OPERATIONS
Operating cash flows	0	(6.2)
Net cash used in discontinued operations	0	(6.2)
Effect of exchange rate changes on cash and cash equivalents	(1.9)	(1.9)
Net increase in cash and cash equivalents	100.5	319.8
Cash and cash equivalents at beginning of period	229.5	121.2
Cash and cash equivalents at end of period	330	441
Cash paid during the period for:
Interest, net	6.3	6.1
Income taxes, net	22.8	52
Non-cash investing and financing activities:
Non-cash acquisitions of property, plant, and equipment	$ 1.2	$ 1.2

CONSOLIDATED BALANCE SHEETS (UN

CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 330	$ 229.5
Accounts receivable, net	164.7	143.2
Inventories	147.8	139.1
Income tax receivable	42.7	49.6
Prepaid expenses and other current assets	24.3	17.6
Total current assets	709.5	579
Property, plant and equipment, net	182.2	195
Goodwill	606.6	621.8
Other intangible assets, net	521	553.6
Other assets	133.4	134.2
Total assets	2,152.7	2,083.6
Current liabilities
Current maturities of long-term debt	3.9	3.8
Accounts payable	75.7	69.8
Accrued expenses	142.8	128.4
Total current liabilities	222.4	202
Long-term debt	485.5	487.5
Deferred taxes and non-current income taxes payable	125.5	130.5
Other liabilities	128.6	136.7
Total liabilities	962	956.7
Commitments and contingencies
Redeemable non-controlling interests	50	48.4
Shareholders’ equity
Common stock – $.01 par value; 100,000,000 shares authorized; issued, 20,785,746 shares in 2021 and 20,718,675 shares in 2020	0.2	0.2
Additional paid-in capital	291.2	289.6
Retained earnings	852.7	794.8
Accumulated other comprehensive loss	(2.2)	(4.9)
Common stock held in treasury, at cost – 181,180 shares in 2021 and 182,511 shares in 2020	(1.2)	(1.2)
Total shareholders’ equity	1,140.7	1,078.5
Total liabilities and equity	$ 2,152.7	$ 2,083.6

CONSOLIDATED BALANCE SHEETS (_2

CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	20,785,746	20,718,675
Treasury stock, shares (in shares)	181,180	182,511

Overview, Basis of Presentation

Overview, Basis of Presentation and Recently Issued Authoritative Accounting Guidance	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Overview, Basis of Presentation and Recently Issued Authoritative Accounting Guidance	Overview, Basis of Presentation and Recently Issued Authoritative Accounting Guidance Overview EnPro Industries, Inc. (“we,” “us,” “our,” “EnPro,” or the “Company”) is a leader in designing, developing, manufacturing, servicing, and marketing proprietary engineered industrial products and serves a wide variety of customers in varied industries around the world. Over the past several years, we have executed several strategic initiatives to change the portfolio of businesses that we operate to focus on materials science-based businesses with leading technologies, compelling margins, strong cash flow, and high levels of recurring revenue that serve markets with favorable secular tailwinds. These initiatives have increased our ability to provide solutions to the semiconductor, life sciences, and other technology industries. Basis of Presentation The accompanying interim consolidated financial statements are unaudited, and certain related information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been omitted in accordance with Rule 10-01 of Regulation S-X. They were prepared following the same policies and procedures used in the preparation of our annual financial statements except as disclosed below and reflect all adjustments (consisting of normal recurring adjustments) necessary for a fair statement of results for the periods presented. The Consolidated Balance Sheet as of December 31, 2020 was derived from the audited financial statements included in our annual report on Form 10-K for the year ended December 31, 2020. The results of operations for the interim periods are not necessarily indicative of the results for the fiscal year. These consolidated financial statements should be read in conjunction with our annual consolidated financial statements for the year ended December 31, 2020 included within our annual report on Form 10-K. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amount of assets and liabilities and the disclosures regarding contingent assets and liabilities at period end and the reported amounts of revenue and expenses during the reporting period. All intercompany accounts and transactions between our consolidated operations have been eliminated. During March 2021, we identified two errors related to our accounting for the disposal of the Air Springs portion of the heavy-duty trucking business that closed in the fourth quarter of 2020. Such errors resulted in an understatement of the pre-tax loss on disposal for this disposition by approximately $2.0 million and an overstatement of net income by approximately $1.5 million in our previously issued consolidated financial statements for calendar 2020. Net income for calendar 2020 was $184.8 million. We evaluated the errors and concluded that they were not material to our previously issued consolidated financial statements and recorded the pre-tax loss on disposal as an out-of-period adjustment in other income (expense) in our Consolidated Statement of Operations for the first quarter of 2021. Beginning with the first quarter of 2021, we modified the presentation of our Consolidated Statements of Operations to move income from discontinued operations directly following income from continuing operations before calculating a net income subtotal. Consistent with this change in presentation, we also began the Consolidated Statements of Cash Flows with net income rather than net income attributable to EnPro Industries, Inc. We have revised the prior period presented for these two financial statements to conform with this modified presentation. There is no impact to the Consolidated Balance Sheets as a result of this presentation change.

Acquisition and Divestiture

Acquisition and Divestiture	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Acquisition and Divestiture	Acquisition and Divestiture Acquisition On October 26, 2020, a subsidiary of EnPro formed for this purpose (the "Alluxa Acquisition Subsidiary") acquired all of the equity securities of Alluxa, Inc. ("Alluxa"), a privately held company. Alluxa is an industrial technology company that provides specialized optical filters and thin-film coatings for the most challenging applications in the industrial technology, life sciences, and semiconductor markets. Alluxa's products are developed through a proprietary coating process using state-of-the-art advanced equipment. Alluxa’s global distribution capabilities support the company’s international reach, serving customers across the Americas, Europe, and Asia. Founded in 2007, Alluxa has two locations in California and is headquartered in Santa Rosa, California. Alluxa is included with the Advanced Surface Technologies segment. The following pro forma condensed consolidated financial results of operations for the quarter and nine months ended September 30, 2020 are presented as if the acquisition had been completed prior to 2020: Quarter Ended September 30, 2020 Nine Months Ended September 30, 2020 (in millions) Pro forma net sales $ 276.6 $ 821.6 Pro forma loss from continuing operations $ (21.9) $ (17.0) These amounts have been calculated after applying our accounting policies and adjusting the results of Alluxa to reflect the additional depreciation and amortization that would have been charged assuming the fair value adjustments to property, plant and equipment and intangible assets had been applied prior to 2020 as well as additional interest expense to reflect financing required, together with the consequential tax effects. These pro forma financial results have been prepared for comparative purposes only and do not reflect the effect of synergies that would have been expected to result from the integration of this acquisition. The pro forma information does not purport to be indicative of the results of operations that actually would have resulted had the acquisition occurred prior to 2020, or of future results of the consolidated entities. Divestiture

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our income tax expense and resulting effective tax rate are based upon the estimated annual effective tax rates applicable for the respective periods adjusted for the effect of items required to be treated as discrete in the interim periods. This estimated annual effective tax rate is affected by the relative proportions of revenue and income before taxes in the jurisdictions in which we operate. Based on the geographical mix of earnings, our annual effective tax rate fluctuates based on the portion of our profits earned in each jurisdiction. The effective tax rates for the quarters ended September 30, 2021 and 2020 were 35.4% and 25.4%, respectively. The effective tax rate for the three months ended September 30, 2021 is primarily the result of non-deductible tax goodwill related to the divestiture in our Sealing Technologies segment and higher tax rates in most foreign jurisdictions. The effective tax rates for the nine months ended September 30, 2021 and 2020 were 21.9% and (17.9)%, respectively. The effective tax rate for the nine months ended September 30, 2021 is primarily the result of the release of a valuation allowance on certain foreign net operating losses, the favorable conclusion of the IRS examination described below, and the release of certain uncertain tax positions, partially offset by higher tax rates in most foreign jurisdictions. The effective tax rate for the nine months ended September 30, 2020 is primarily the result of lower pre-tax income overall, a geographical mix of lower pre-tax income in the U.S. combined with the minimum tax on certain non-U.S. earnings, and an increase of valuation allowance against certain net operating losses, partially offset by higher tax rates in most foreign jurisdictions. In June 2017, the IRS began an examination of our 2014 through 2017 U.S. federal income tax returns. The IRS audit concluded during the quarter ended June 30, 2021. As a result of the conclusion of the audit, we received a cash refund of $24.7 million plus $1.2 million of applicable interest in October of 2021. These amounts were included in income tax receivable and prepaid expenses and other current assets, respectively, on our Consolidated Balance Sheet as of September 30, 2021. Various foreign and state tax returns are also currently under examination and some of these exams may conclude within the next twelve months. The final outcomes of these audits are not yet determinable; however, management believes that any assessments that may arise will not have a material effect on our financial results.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Quarters Ended Nine Months Ended September 30, 2021 2021 2020 2021 2020 (in millions, except per share amounts) Numerator (basic and diluted): Income (loss) from continuing operations, net of tax $ 27.6 $ (21.3) $ 74.9 $ (14.3) Less: net income attributable to redeemable non-controlling interests 0.1 0.3 0.1 0.5 Income (loss) from continuing operations attributable to EnPro Industries, Inc. 27.5 (21.6) 74.8 (14.8) Income from discontinued operations, net of tax — 1.9 — 207.3 Net income (loss) attributable to EnPro Industries, Inc. $ 27.5 $ (19.7) $ 74.8 $ 192.5 Denominator: Weighted-average shares – basic 20.6 20.5 20.6 20.5 Share-based awards 0.1 — 0.2 — Weighted-average shares – diluted 20.7 20.5 20.8 20.5 Basic earnings (loss) per share attributable to EnPro Industries, Inc.: Continuing operations $ 1.34 $ (1.05) $ 3.63 $ (0.72) Discontinued operations — 0.09 — 10.09 Net income (loss) per share $ 1.34 $ (0.96) $ 3.63 $ 9.37 Diluted earnings (loss) per share attributable to EnPro Industries, Inc.: Continuing operations $ 1.33 $ (1.05) $ 3.61 $ (0.72) Discontinued operations — 0.09 — 10.09 Net income (loss) per share $ 1.33 $ (0.96) $ 3.61 $ 9.37 In the quarter and nine months ended September 30, 2020, there were losses from continuing operations attributable to common shares. There were 0.1 million of potentially dilutive shares excluded from the calculation of diluted earnings per share during each of those periods since they were antidilutive.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2021
Inventory Disclosure [Abstract]
Inventories	Inventories September 30, December 31, (in millions) Finished products $ 66.0 $ 69.4 Work in process 25.9 24.8 Raw materials and supplies 60.5 48.7 152.4 142.9 Reserve to reduce certain inventories to LIFO basis (4.6) (3.8) Total inventories $ 147.8 $ 139.1 We use the last-in, first-out (“LIFO”) method of valuing certain of our inventories. An actual valuation of inventory under the LIFO method can be made only at the end of each year based on the inventory levels and costs at that time. Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and costs, which are subject to change until the final year-end LIFO inventory valuation.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets The changes in the net carrying value of goodwill by reportable segment for the nine months ended September 30, 2021, are as follows: Sealing Advanced Surface Technologies Engineered Total (in millions) Goodwill as of December 31, 2020 $ 297.4 $ 307.7 $ 16.7 $ 621.8 Divestiture of business (13.5) — — (13.5) Foreign currency translation (2.9) 1.2 — (1.7) Goodwill as of September 30, 2021 $ 281.0 $ 308.9 $ 16.7 $ 606.6 The goodwill balances reflected above are net of accumulated impairment losses of $27.8 million for the Sealing Technologies segment and $154.8 million for the Engineered Materials segment as of September 30, 2021 and December 31, 2020. Identifiable intangible assets are as follows: As of September 30, 2021 As of December 31, 2020 Gross Accumulated Gross Accumulated (in millions) Amortized: Customer relationships $ 502.4 $ 194.1 $ 505.5 $ 177.8 Existing technology 179.5 50.3 179.6 41.3 Trademarks 43.4 26.3 44.6 25.7 Other 37.3 24.2 37.6 22.3 762.6 294.9 767.3 267.1 Indefinite-Lived: Trademarks 53.3 — 53.4 — Total $ 815.9 $ 294.9 $ 820.7 $ 267.1 Amortization for the quarters and nine months ended September 30, 2021 and 2020 were $11.1 million, $8.9 million, $33.7 million and $26.8 million, respectively.

Accrued Expenses

Accrued Expenses	9 Months Ended
	Sep. 30, 2021
Payables and Accruals [Abstract]
Accrued Expenses	Accrued Expenses September 30, December 31, (in millions) Salaries, wages and employee benefits $ 56.5 $ 46.3 Interest 9.5 4.4 Environmental 12.6 12.6 Income taxes 11.9 9.9 Taxes other than income taxes 11.7 9.4 Operating lease liabilities 9.1 10.1 Other 31.5 35.7 $ 142.8 $ 128.4

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Revolving Credit Facility On September 25, 2019, we entered into a First Amendment (the "First Amendment") to our Second Amended and Restated Credit Agreement (the "Credit Agreement”) among EnPro Industries, Inc. and EnPro Holdings, Inc., a wholly owned subsidiary of the Company (“EnPro Holdings”), as borrowers, the guarantors party thereto, the lenders party thereto and Bank of America, N.A., as Administrative Agent, Swing Line Lender and Letter of Credit Issuer. The Credit Agreement provides for a five-year, senior secured revolving credit facility of $400.0 million (the “Revolving Credit Facility”) and a five-year, senior secured term loan facility of $150.0 million (the "Term Loan Facility" and, together with the Revolving Credit Facility, the "Facilities"). The Amended Credit Agreement also provides that the borrowers may seek incremental term loans and/or additional revolving credit commitments in an amount equal to the greater of $225.0 million and 100% of consolidated EBITDA (as defined) 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. Initially, borrowings under the Facilities bore interest at an annual rate of LIBOR plus 1.50% or base rate plus 0.50%, with the interest rates under the Facilities being subject to incremental increases 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%, which rate is also subject to incremental increase or decrease based on a consolidated total net leverage ratio. The Term Loan Facility amortizes on a quarterly basis in an annual amount equal to 2.50% of the original principal amount of the Term Loan Facility in each of years one through three, 5.00% of such original principal amount in year four, and 1.25% of such original principal amount in each of the first three quarters of year five, with the remaining outstanding principal amount payable at maturity. The Facilities are subject to prepayment with the net cash proceeds of certain asset sales, casualty or condemnation events, and non-permitted debt issuances. EnPro and EnPro Holdings are the permitted borrowers under the Revolving Credit Facility. We have the ability to add foreign subsidiaries as borrowers under the Revolving Credit Facility for up to $100.0 million (or its foreign currency equivalent) in aggregate borrowings, subject to certain conditions. Each of our domestic, consolidated subsidiaries are required to guarantee the obligations of the borrowers under the Revolving Credit Facility, and each of our existing domestic, consolidated subsidiaries has entered into the Credit Agreement to provide such a guarantee. Borrowings under the Revolving Credit Facility are secured by a first-priority pledge of certain assets. The Credit Agreement contains certain financial covenants and required financial ratios including a maximum consolidated total net leverage and a minimum consolidated interest coverage as defined in the Credit Agreement. We were in compliance with all covenants of the Credit Agreement as of September 30, 2021. The borrowing availability under the Revolving Credit Facility at September 30, 2021 was $388.5 million after giving consideration to $11.5 million of outstanding letters of credit. At September 30, 2021, we had $142.5 million outstanding on our Term Loan Facility borrowings. Senior Notes In October 2018, we completed the offering of $350.0 million aggregate principal amount of 5.75% Senior Notes due 2026 (the "Senior Notes"). The Senior Notes are unsecured, unsubordinated obligations of EnPro and mature on October 15, 2026. Interest on the Senior Notes accrues at a rate of 5.75% per annum and is payable semi-annually in cash in arrears on April 15 and October 15 of each year, commencing on April 15, 2019. 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. As of October 15, 2021, we may, on any one or more occasion, redeem all or part of the Senior Notes at specified redemption prices plus accrued and unpaid interest. 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.

Pensions and Postretirement Ben

Pensions and Postretirement Benefits	9 Months Ended
	Sep. 30, 2021
Retirement Benefits [Abstract]
Pensions and Postretirement Benefits	Pensions and Postretirement Benefits The components of net periodic benefit cost for our U.S. and foreign defined benefit pension and other postretirement plans for the quarters and nine months ended September 30, 2021 and 2020, are as follows: Quarters Ended September 30, Nine Months Ended September 30, Pension Benefits Other Benefits Pension Benefits Other Benefits 2021 2020 2021 2020 2021 2020 2021 2020 (in millions) Service cost $ 0.4 $ 1.2 $ — $ — $ 1.2 $ 3.4 $ — $ — Interest cost 2.3 2.5 — — 6.8 7.9 0.1 0.1 Expected return on plan assets (4.5) (4.8) — — (13.6) (14.3) — — Amortization of prior service cost — — — — 0.1 — — — Amortization of net loss (gain) 0.2 1.4 0.1 0.1 0.5 4.0 0.1 (1.0) Curtailment loss — — — — — 0.3 — — Net periodic benefit cost (benefit) $ (1.6) $ 0.3 $ 0.1 $ 0.1 $ (5.0) $ 1.3 $ 0.2 $ (0.9)

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Shareholders' Equity	Shareholders' Equity Changes in shareholders' equity for the nine months ended September 30, 2021 are as follows: Common Stock Additional Paid-in Capital Retained Earnings Accumulated Other Comprehensive Loss Treasury Stock Total Shareholders' Equity Redeemable Non-controlling Interests (in millions, except per share data) Shares Amount Balance, December 31, 2020 20.5 $ 0.2 $ 289.6 $ 794.8 $ (4.9) $ (1.2) $ 1,078.5 $ 48.4 Net income — — — 18.0 — — 18.0 0.1 Other comprehensive loss — — — — (7.9) — (7.9) (0.5) Dividends ($0.27 per share) — — — (5.7) — — (5.7) — Incentive plan activity 0.1 — 1.2 — — — 1.2 — Other — — (0.1) (3.1) — — (3.2) 3.2 Balance, March 31, 2021 20.6 0.2 290.7 804.0 (12.8) (1.2) 1,080.9 51.2 Net income (loss) — — — 29.3 — — 29.3 (0.1) Other comprehensive income — — — — 11.8 — 11.8 0.6 Dividends ($0.27 per share) — — — (5.6) — (5.6) — Incentive plan activity — — 1.6 — — — 1.6 — Other — — (0.1) 0.2 — — 0.1 (0.1) Balance, June 30, 2021 20.6 0.2 292.2 827.9 (1.0) (1.2) 1,118.1 51.6 Net income — — — 27.5 — — 27.5 0.1 Other comprehensive income (loss) — — — — (1.2) — (1.2) 0.2 Dividends ($0.27 per share) — — — (5.6) — — (5.6) — Other — — (1.0) 2.9 — — 1.9 (1.9) Balance, September 30, 2021 20.6 $ 0.2 $ 291.2 $ 852.7 $ (2.2) $ (1.2) $ 1,140.7 $ 50.0 Changes in shareholders' equity for the nine months ended September 30, 2020 are as follows: Common Stock Additional Paid-in Capital Retained Earnings Accumulated Other Comprehensive Loss Treasury Stock Total Shareholders' Equity Redeemable Non-controlling Interests (in millions, except per share data) Shares Amount Balance, December 31, 2019 20.6 $ 0.2 $ 292.1 $ 632.2 $ (36.4) $ (1.2) $ 886.9 $ 28.0 Adoption of new accounting standard — — — (0.1) — — (0.1) — Net income — — — 218.7 — — 218.7 0.1 Other comprehensive income (loss) — — — — (22.5) — (22.5) 0.9 Dividends ($0.26 per share) — — — (5.3) — — (5.3) — Share repurchases (0.1) — (5.3) — — — (5.3) — Incentive plan activity — — 1.0 — — — 1.0 — Other — — (1.5) — — — (1.5) — Balance, March 31, 2020 20.5 0.2 286.3 845.5 (58.9) (1.2) 1,071.9 29.0 Net income (loss) — — — (6.5) — — (6.5) 0.1 Other comprehensive income — — — — 22.7 — 22.7 0.6 Dividends ($0.26 per share) — — — (5.4) — — (5.4) — Incentive plan activity — — 1.5 — — — 1.5 — Balance, June 30, 2020 20.5 0.2 287.8 833.6 (36.2) (1.2) 1,084.2 29.7 Net income (loss) — — — (19.7) — — (19.7) 0.3 Other comprehensive income — — — — 6.1 — 6.1 0.5 Dividends ($0.26 per share) — — — (5.4) — — (5.4) — Incentive plan activity — — 0.7 — — — 0.7 — Balance, September 30, 2020 20.5 $ 0.2 $ 288.5 $ 808.5 $ (30.1) $ (1.2) $ 1,065.9 $ 30.5 We intend to declare regular quarterly cash dividends on our common stock, as determined by our board of directors, after taking into account our current and projected cash flows, earnings, financial position, debt covenants and other relevant factors. In accordance with the board of directors' declaration, total dividend payments of $16.8 million were made during the nine months ended September 30, 2021. In November 2021, our board of directors declared a dividend of $0.27 per share, payable on December 15, 2021 to all shareholders of record as of December 1, 2021. In October 2018, our board of directors authorized the expenditure of up to $50.0 million for the repurchase of our outstanding common shares. During the nine months ended September 30, 2020 we repurchased 0.1 million shares for $5.3 million. Prior to the expiration of the authorization in October 2020, total repurchases under the October 2018 authorization aggregated 0.3 million shares for $20.3 million. In October 2020, our board of directors authorized the expenditure of up to $50.0 million for the repurchase of our outstanding common shares through October 2022. We have not made any repurchases under this authorization. In February 2021, we issued stock options to certain key executives fo r 0.1 million common shares wit h an exercise price of $80.00 per share. The options vest pro-rata on the first, second and third anniversaries of the grant date, subject to continued employment. No options have a term greater than 10 years. We determine the fair value of stock options using the Black-Scholes option pricing formula as of the grant date. Key inputs into this formula include expected term, expected volatility, expected dividend yield, and the risk-free interest rate. This fair value is amortized on a straight line basis over the vesting period. The expected term represents the period that our stock options are expected to be outstanding, and is determined based on historical experience of similar awards, given the contractual terms of the awards, vesting schedules, and expectations of future employee behavior. The fair value of stock options reflects a volatility factor calculated using historical market data for EnPro's common stock. The time frame used was approximated as a six-year period from the grant date for the awards. The dividend assumption is based on our expectations as of the grant date. We base the risk-free interest rate on the yield to maturity at the time of the stock option grant on zero-coupon U.S. government bonds having a remaining life equal to the option's expected life. The option awards issued in 2021 had a fair value of $27.46 per share at their grant date. The following assumptions were used to estimate the fair value of the 2021 option awards: Average expected term 6 years Expected volatility 40.29 % Risk-free interest rate 1.02 % Expected dividend yield 1.35 %

Business Segment Information

Business Segment Information	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information We aggregate our operating businesses into three reportable segments. The factors considered in determining our reportable segments are the economic similarity of the businesses, the nature of products sold or services provided, the production processes and the types of customers and distribution methods. Our reportable segments are managed separately based on these differences. Our Sealing Technologies segment designs, manufactures and sells sealing products, including: metallic, non-metallic and composite material gaskets, dynamic seals, compression packing, resilient metal seals, elastomeric seals, custom-engineered mechanical seals for applications in the aerospace industry and other markets, hydraulic components, expansion joints, sanitary gaskets, hoses and fittings for the hygienic process industries, fluid transfer products for the pharmaceutical and biopharmaceutical industries, hole forming products, bellows and bellows assemblies, PTFE products, and heavy-duty commercial vehicle parts used in wheel-end and suspension components. These products are used in a variety of industries, including chemical and petrochemical processing, pulp and paper processing, power generation, food and pharmaceutical processing, primary metal manufacturing, mining, water and waste treatment, heavy-duty trucking, aerospace, medical, filtration and semiconductor fabrication. In many of these industries, performance and durability are vital for safety and environmental protection. Many of our products are used in highly demanding applications, e.g., where extreme temperatures, extreme pressures, corrosive environments, strict tolerances, and/or worn equipment make product performance difficult. Our Advanced Surface Technologies segment applies proprietary technologies, processes, and capabilities to deliver highly differentiated suites of products and services for the most challenging applications in high growth markets. The segment’s products and services are used in highly demanding environments requiring performance, precision and repeatability, with a low tolerance for failure. The segment’s services include cleaning, coating, testing, refurbishment and verification services for critical components and assemblies used in state-of-the-art advanced node semiconductor manufacturing equipment. It designs, manufactures and sells specialized optical filters and thin-film coatings for the most challenging applications in the industrial technology, life sciences, and semiconductor markets and complex front-end wafer processing sub-systems, new and refurbished electrostatic chuck pedestals, thin film coatings, and edge-welded metal bellows for the semiconductor equipment industry and for critical applications in the space, aerospace and defense markets. Our Engineered Materials segment includes operations that design, manufacture and sell self-lubricating, non-rolling metal-polymer, engineered plastics, and fiber reinforced composite bearing products, precision engineered components and lubrication systems for reciprocating compressors and engines, critical service flange gaskets, seals and electrical flange isolation kits used in high-pressure wellhead equipment, flow lines, water injection lines, sour hydrocarbon process applications, and crude oil and natural gas pipeline/transmission line applications. These products are used in a wide range of applications, including the automotive, aerospace, pharmaceutical, pulp and paper, natural gas, health, power generation, machine tools, air treatment, refining, petrochemical and general industrial markets. We measure operating performance based on segment earnings before interest, income taxes, depreciation, amortization, and other selected items ("Adjusted Segment EBITDA"), which is segment revenue reduced by operating expenses and other costs identifiable with the segment, excluding acquisition and divestiture expenses, restructuring costs, impairment charges, non-controlling interest compensation, amortization of the fair value adjustment to acquisition date inventory, and depreciation and amortization. Adjusted Segment EBITDA is not defined under GAAP and may not be comparable to similarly-titled measures used by other companies. Corporate expenses include general corporate administrative costs. Expenses not directly attributable to the segments, corporate expenses, net interest expense, gains and losses related to the sale of assets, and income taxes are not included in the computation of Adjusted Segment EBITDA. The accounting policies of the reportable segments are the same as those for EnPro. Non-controlling interest compensation allocation represents compensation expense associated with a portion of the rollover equity from the acquisitions of LeanTeq and Alluxa being subject to reduction for certain types of employment terminations of the sellers. This expense is recorded in selling, general, and administrative expenses on our Consolidated Statements of Operations and is directly related to the terms of the acquisitions. This expense will continue to be recognized as compensation expense over the term of the put and call options associated with the acquisitions unless certain employment terminations have occurred. Segment operating results and other financial data for the quarters and nine months ended September 30, 2021 and 2020 were as follows: Quarters Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in millions) Sales Sealing Technologies $ 146.9 $ 157.8 $ 455.9 $ 482.0 Advanced Surface Technologies 64.3 44.6 178.2 121.3 Engineered Materials 73.8 67.7 234.2 201.4 285.0 270.1 868.3 804.7 Intersegment sales (1.9) (1.8) (7.3) (6.7) Total sales $ 283.1 $ 268.3 $ 861.0 $ 798.0 Adjusted Segment EBITDA Sealing Technologies $ 34.5 $ 32.0 $ 110.8 $ 96.1 Advanced Surface Technologies 19.4 13.4 52.3 31.7 Engineered Materials 8.8 7.9 34.4 21.1 $ 62.7 $ 53.3 $ 197.5 $ 148.9 Reconciliation of Adjusted Segment EBITDA to income (loss) from continuing operations before income taxes Adjusted Segment EBITDA $ 62.7 $ 53.3 $ 197.5 $ 148.9 Acquisition and divestiture expenses (0.3) (1.3) (0.4) (2.6) Non-controlling interest compensation allocation (1.3) (0.5) (4.1) (1.6) Amortization of fair value adjustment to acquisition date inventory (1.0) — (5.8) — Restructuring and impairment expense (0.7) (5.0) (5.2) (23.9) Depreciation and amortization expense (18.3) (17.0) (55.6) (51.5) Corporate expenses (11.6) (11.7) (36.0) (27.3) Interest expense, net (2.6) (3.9) (10.2) (11.4) Other income (expense), net 15.8 (42.5) 15.8 (42.7) Income (loss) from continuing operations before income taxes $ 42.7 $ (28.6) $ 96.0 $ (12.1) Segment assets are as follows: September 30, December 31, (in millions) Sealing Technologies $ 713.1 $ 741.9 Advanced Surface Technologies 758.5 768.2 Engineered Materials 250.5 245.8 Corporate 430.6 327.7 $ 2,152.7 $ 2,083.6 Backlog As of September 30, 2021, the aggregate amount of transaction price of remaining performance obligations, or backlog, on a consolidated basis was $298.3 million. Approximately 96% of these obligations are expected to be satisfied within one year. There is no certainty these orders will result in actual sales at the times or in the amounts ordered. In addition, for most of our business, this total is not particularly predictive of future performance because of our short lead times and some seasonality. Revenue by End Market Due to the diversified nature of our business and the wide array of products that we offer, we sell into a number of end markets. Underlying economic conditions within these markets are a major driver of our segments' sales performance. Below is a summary of our third-party sales by major end market with which we did business for the quarters and nine months ended September 30, 2021 and 2020: Quarter Ended September 30, 2021 (in millions) Sealing Technologies Advanced Surface Technologies Engineered Materials Total Aerospace $ 8.4 $ 2.6 $ 1.6 $ 12.6 Automotive 0.6 0.2 13.4 14.2 Chemical and material processing 17.5 — 11.2 28.7 Food and pharmaceutical 16.8 — 0.3 17.1 General industrial 40.9 7.2 27.2 75.3 Medium-duty/heavy-duty truck 43.2 — 2.1 45.3 Oil and gas 4.6 1.0 16.3 21.9 Power generation 8.4 0.1 0.8 9.3 Semiconductors 3.3 52.5 — 55.8 Other 1.8 0.6 0.5 2.9 Total third-party sales $ 145.5 $ 64.2 $ 73.4 $ 283.1 Quarter Ended September 30, 2020 (in millions) Sealing Technologies Advanced Surface Technologies Engineered Materials Total Aerospace $ 10.3 $ 1.7 $ 0.9 $ 12.9 Automotive 0.4 — 14.1 14.5 Chemical and material processing 9.3 — 11.0 20.3 Food and pharmaceutical 12.7 — 0.4 13.1 General industrial 38.6 — 20.3 58.9 Medium-duty/heavy-duty truck 66.0 — 1.4 67.4 Oil and gas 5.2 0.3 17.0 22.5 Power generation 9.5 — 2.3 11.8 Semiconductors 3.5 42.5 — 46.0 Other 0.8 — 0.1 0.9 Total third-party sales $ 156.3 $ 44.5 $ 67.5 $ 268.3 Nine Months Ended September 30, 2021 (in millions) Sealing Technologies Advanced Surface Technologies Engineered Materials Total Aerospace $ 23.4 $ 7.1 $ 4.4 $ 34.9 Automotive 1.6 0.7 48.4 50.7 Chemical and material processing 54.1 — 33.1 87.2 Food and pharmaceutical 49.8 — 1.1 50.9 General industrial 128.5 19.4 88.0 235.9 Medium-duty/heavy-duty truck 129.7 — 7.6 137.3 Oil and gas 14.2 3.4 47.0 64.6 Power generation 29.1 0.1 2.6 31.8 Semiconductors 13.4 145.3 — 158.7 Other 5.9 2.0 1.1 9.0 Total third-party sales $ 449.7 $ 178.0 $ 233.3 $ 861.0 Nine Months Ended September 30, 2020 (in millions) Sealing Technologies Advanced Surface Technologies Engineered Materials Total Aerospace $ 31.1 $ 5.9 $ 4.4 $ 41.4 Automotive 0.8 — 38.2 39.0 Chemical and material processing 35.0 — 32.7 67.7 Food and pharmaceutical 37.5 — 1.2 38.7 General industrial 121.3 — 64.3 185.6 Medium-duty/heavy-duty truck 188.9 — 4.7 193.6 Oil and gas 17.2 1.8 49.3 68.3 Power generation 30.5 — 5.7 36.2 Semiconductors 10.6 113.5 — 124.1 Other 3.2 — 0.2 3.4 Total third-party sales $ 476.1 $ 121.2 $ 200.7 $ 798.0 In 2021, we refined the end market classification of certain sales in the Engineered Materials segment for the quarter and nine months ended September 30, 2020. This refinement resulted in a reduction in sales reported for the quarter ended September 30, 2020 in the automotive and power generation markets of approximately $2.6 million and $3.2 million, respectively, with an offsetting increase in the general industrial, and medium duty/heavy duty truck markets of approximately, $4.4 million, and $1.4 million, respectively. For the nine months ended September 30, 2020, this refinement resulted in a reduction to the automotive and power generation markets of approximately $6.3 million and $8.6 million, respectively, and an

Derivatives and Hedging

Derivatives and Hedging	9 Months Ended
	Sep. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	Derivatives and Hedging In September 2018, we entered into cross-currency swap agreements (the "Original Swap") with a notional amount of $200.0 million to manage foreign currency risk by effectively converting a portion of the interest payments related to our fixed-rate U.S. Dollar (“USD”)-denominated Senior Notes, including the semi-annual interest payments thereunder, to interest payments on fixed-rate Euro-denominated debt of 172.8 million EUR with a weighted average interest rate of 2.8%, with interest payment dates of March 15 and September 15 of each year. The Original Swap agreement matures on September 15, 2022. In May 2019, we entered into additional cross-currency swap agreements (the "Additional Swap") with a notional amount of $100.0 million to manage an increased portion of our foreign currency risk by effectively converting a portion of the interest payments related to our fixed-rate USD-denominated Senior Notes, including the semi-annual interest payments thereunder, to interest payments on fixed-rate Euro-denominated debt of 89.6 million EUR with a weighted average interest rate of 3.5%, with interest payment dates of April 15 and October 15 of each year. The Additional Swap agreement matures on October 15, 2026. During the term of the swap agreements, we will receive semi-annual payments from the counterparties due to the difference between the interest rate on the Senior Notes and the interest rate on the Euro debt underlying each of the swaps. There was no principal exchange at the inception of the arrangements, and there will be no exchange at maturity. At maturity (or earlier at our option), we and the counterparties will settle the swap agreements at their fair value in cash based on the aggregate notional amount and the then-applicable currency exchange rate compared to the exchange rate at the time the swap agreements were entered into. We have designated these cross-currency swaps as qualifying hedging instruments and are accounting for them as a net investment hedge. At September 30, 2021, the cross-currency swap agreements were recorded as a $4.0 million asset and a $0.1 million liability within prepaid expenses and other current assets and other liabilities, respectively, on the Consolidated Balance Sheet. The gains and losses resulting from fair value adjustments to the cross currency-swap agreements, excluding interest accruals related to the above receipts, are recorded in accumulated other comprehensive loss within our cumulative foreign currency translation adjustment, as the swaps are effective in hedging the designated risk. Cash flows related to the cross-currency swaps are included in operating activities in the Consolidated Statements of Cash Flows, aside from the ultimate settlement at maturity with the counterparties, which will be included in investing activities.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Assets and liabilities measured at fair value on a recurring basis are summarized as follows: Fair Value Measurements as of September 30, 2021 December 31, 2020 (in millions) Assets Time deposits $ 4.2 $ 4.2 Foreign currency derivatives 4.0 — Deferred compensation assets 10.2 8.6 $ 18.4 $ 12.8 Liabilities Deferred compensation liabilities $ 10.6 $ 8.9 Foreign currency derivatives 0.1 9.5 $ 10.7 $ 18.4 Our time deposits and deferred compensation assets and liabilities are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices. Our foreign currency derivatives are classified as Level 2 since their value is calculated based upon observable inputs including market USD/Euro exchange rates and market interest rates. The carrying values of our significant financial instruments reflected in the Consolidated Balance Sheets approximated their respective fair values except for the following instruments: September 30, 2021 December 31, 2020 Carrying Fair Carrying Fair (in millions) Long-term debt $ 489.4 $ 509.5 $ 491.3 $ 520.8

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss Changes in accumulated other comprehensive loss by component (after tax) for the quarter ended September 30, 2021 are as follows: (in millions) Unrealized Pension and Total Beginning balance $ 35.3 $ (36.3) $ (1.0) Other comprehensive loss before reclassifications (1.2) — (1.2) Amounts reclassified from accumulated other comprehensive loss — 0.2 0.2 Net current-period other comprehensive income (loss) (1.2) 0.2 (1.0) Less: other comprehensive income attributable to redeemable non-controlling interests 0.2 — 0.2 Net current-period other comprehensive income (loss) attributable to EnPro Industries, Inc. (1.4) 0.2 (1.2) Ending balance $ 33.9 $ (36.1) $ (2.2) Changes in accumulated other comprehensive loss by component (after tax) for the quarter ended September 30, 2020 are as follows: (in millions) Unrealized Pension and Total Beginning balance $ 8.6 $ (44.8) $ (36.2) Other comprehensive income before reclassifications 5.6 — 5.6 Amounts reclassified from accumulated other comprehensive loss — 1.0 1.0 Net current-period other comprehensive income 5.6 1.0 6.6 Less: other comprehensive income attributable to redeemable non-controlling interests 0.5 — 0.5 Net current-period other comprehensive income attributable to EnPro Industries, Inc. 5.1 1.0 6.1 Ending balance $ 13.7 $ (43.8) $ (30.1) Changes in accumulated other comprehensive loss by component (after tax) for the nine months ended September 30, 2021 are as follows: (in millions) Unrealized Pension and Total Beginning balance $ 31.7 $ (36.6) $ (4.9) Other comprehensive income before reclassifications 2.5 — 2.5 Amounts reclassified from accumulated other comprehensive loss — 0.5 0.5 Net current-period other comprehensive income 2.5 0.5 3.0 Less: other comprehensive income attributable to redeemable non-controlling interests 0.3 — 0.3 Net current-period other comprehensive income attributable to EnPro Industries, Inc. 2.2 0.5 2.7 Ending balance $ 33.9 $ (36.1) $ (2.2) Changes in accumulated other comprehensive loss by component (after tax) for the nine months ended September 30, 2020 are as follows: (in millions) Unrealized Pension and Total Beginning balance $ 9.8 $ (46.2) $ (36.4) Other comprehensive income before reclassifications 5.9 — 5.9 Amounts reclassified from accumulated other comprehensive loss — 2.4 2.4 Net current-period other comprehensive income 5.9 2.4 8.3 Less: other comprehensive income attributable to redeemable non-controlling interests 2.0 — 2.0 Net current-period other comprehensive income attributable to EnPro Industries, Inc. 3.9 2.4 6.3 Ending balance $ 13.7 $ (43.8) $ (30.1) Reclassifications out of accumulated other comprehensive loss for the quarters and nine months ended September 30, 2021 and 2020 are as follows: Details about Accumulated Other Comprehensive Loss Components Amount Reclassified from Accumulated Other Affected Statement of Quarters Ended Nine Months Ended (in millions) 2021 2020 2021 2020 Pension and other postretirement plans adjustments: Actuarial losses $ 0.3 $ 1.5 $ 0.6 $ 3.0 (1) Prior service costs — — 0.1 — (1) Curtailment — — — 0.3 (1) Total before tax 0.3 1.5 0.7 3.3 Income before income taxes Tax benefit (0.1) (0.5) (0.2) (0.9) Income tax expense Net of tax $ 0.2 $ 1.0 $ 0.5 $ 2.4 Net income (1) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. As these are components of net periodic pension cost other than service cost, the affected Statement of Operations captions are other income (expense) and income from discontinued operations, including gain on sale, net of taxes (See Note 9, “Pensions and Postretirement Benefits ” for additional details).

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies General A detailed description of environmental and other legal matters relating to certain of our subsidiaries is included in this section. In addition to the matters noted herein, we are from time to time subject to, and are presently involved in, other litigation and legal proceedings arising in the ordinary course of business. We believe the outcome of such other litigation and legal proceedings will not have a material adverse effect on our financial condition, results of operations and cash flows. Expenses for administrative and legal proceedings are recorded when incurred. Environmental Our facilities and operations are subject to federal, state and local environmental and occupational health and safety laws and regulations of the U.S. and foreign countries. We take a proactive approach in our efforts to comply with these laws and regulations as they relate to our manufacturing operations and in proposing and implementing any remedial plans that may be necessary. We also regularly conduct comprehensive environmental, health and safety audits at our facilities to maintain compliance and improve operational efficiency. Although we believe past operations were in substantial compliance with the then applicable regulations, we or one or more of our subsidiaries are involved with various remediation activities or an investigation to determine responsibility for environmental conditions at 20 sites. At 14 of these sites, the future cost per site for us or our subsidiary is expected to exceed $100,000. Of these 20 sites, 18 are sites where we or one or more of our subsidiaries formerly conducted business operations but no longer do, and 2 are sites where we conduct manufacturing operations. Investigations have been completed for 16 sites and are in progress at 3 sites. An investigation to determine responsibility for environmental conditions is ongoing at one site. Our policy is to accrue environmental investigation and remediation costs when it is probable that a liability has been incurred and the amount can be reasonably estimated. For sites with multiple future projected cost scenarios for identified feasible investigation and remediation options where no one estimate is more likely than all the others, our policy is to accrue the lowest estimate among the range of estimates. The measurement of the liability is based on an evaluation of currently available facts with respect to each individual situation and takes into consideration factors such as existing technology, presently enacted laws and regulations and prior experience in the remediation of similar contaminated sites. Liabilities are established for all sites based on these factors. As assessments and remediation progress at individual sites, these liabilities are reviewed and adjusted to reflect additional technical data and legal information. As of September 30, 2021 and December 31, 2020, we had accrued liabilities aggregating $42.9 million and $42.2 million, respectively, for estimated future expenditures relating to environmental contingencies. The current portion of our aggregate environmental liability at September 30, 2021 was $12.6 million. These amounts have been recorded on an undiscounted basis in the Consolidated Balance Sheets. Given the uncertainties regarding the status of laws, regulations, enforcement policies, the impact of other parties potentially being fully or partially liable, technology and information related to individual sites, we do not believe it is possible to develop an estimate of the range of reasonably possible environmental loss in excess of our recorded liabilities. We believe that our accruals for specific environmental liabilities are adequate based on currently available information. Based upon limited information regarding any incremental remediation or other actions that may be required at these sites, we cannot estimate any further loss or a reasonably possible range of loss related to these matters. Actual costs to be incurred in future periods may vary from estimates because of the inherent uncertainties in evaluating environmental exposures due to unknown and changing conditions, changing government regulations and legal standards regarding liability. Arizona Uranium Mines EnPro Holdings has received notices from the EPA asserting that it is a potentially responsible party under the Comprehensive Environmental Response, Compensation, and Liability Act ("CERCLA") as the successor to a former operator of eight uranium mines in Arizona. The former operator conducted operations at the mines from 1954 to 1957. In the 1990s, remediation work performed by others at these sites consisted of capping the exposed areas of the mines. We have previously reserved amounts of probable loss associated with these mines, principally including the cost of the investigative work to be conducted at such mines. We entered into an Administrative Settlement Agreement and Order on Consent for Interim Removal Action with the EPA effective November 7, 2017 for the performance of this work. In 2020, EPA initiated group discussions with EnPro Holdings and other potentially responsible parties to resolve various technical issues, including the development of cleanup standards. Based on these discussions and subsequent discussions with other responsible parties with similar sites, we have concluded that further remedial work beyond maintenance of and minor repairs to the existing caps is probable, and we have evaluated the feasibility of various remediation scenarios. Our reserve at September 30, 2021 for this site was $13.4 million, which reflects the low end of the range of our reasonably likely liability with respect to these sites. We are not able at this time to estimate the upper end of a range of liability with respect to these sites. On October 18, 2021, the United States District Court for the District of Arizona approved and entered a Consent Decree pursuant to which the U.S government will reimburse the Company for 35% of necessary costs of response, as defined in 42 U.S.C. section 9601(25), previously or to be in the future incurred by the Company which arise out of or in connection with releases or threated releases of hazardous substances at or emanating from the mine sites. Of the expected contribution of $3.8 million from the U.S. government towards remediation of the site, $1.4 million was included in prepaid expenses and other current assets and $2.4 million was included in other assets in the accompanying consolidated balance sheet at September 30, 2021. Lower Passaic River Study Area Based on our prior ownership of Crucible Steel Corporation a/k/a Crucible, Inc. (“Crucible”), we may have additional contingent liabilities in one or more significant environmental matters. One such matter, which is included in the 20 sites referred to above, is the Lower Passaic River Study Area of the Diamond Alkali Superfund Site in New Jersey. Crucible operated a steel mill abutting the Passaic River in Harrison, New Jersey from the 1930s until 1974, which was one of many industrial operations on the river dating back to the 1800s. Certain contingent environmental liabilities related to this site were retained by a predecessor of our EnPro Holdings, Inc. subsidiary (which, including its corporate predecessors is referred to as "EnPro Holdings") when it sold a majority interest in Crucible Materials Corporation (the successor of Crucible) in 1985. The United States Environmental Protection Agency (the “EPA”) notified our subsidiary in September 2003 that it is a potentially responsible party (“PRP”) for Superfund response actions in the lower 17-mile stretch of the Passaic River known as the Lower Passaic River Study Area. EnPro Holdings and approximately 70 of the numerous other PRPs, known as the Cooperating Parties Group, are parties to a May 2007 Administrative Order on Consent with the EPA to perform a Remedial Investigation/Feasibility Study (“RI/FS”) of the contaminants in the Lower Passaic River Study Area. In September 2018, EnPro Holdings withdrew from the Cooperating Parties Group but remains a party to the May 2007 Administrative Order on Consent. The RI/FS was completed and submitted to the EPA at the end of April 2015. The RI/FS recommends a targeted dredge and cap remedy with monitored natural recovery and adaptive management for the Lower Passaic River Study Area. The cost of such remedy is estimated to be $726 million. Previously, on April 11, 2014, the EPA released its Focused Feasibility Study (the “FFS”) with its proposed plan for remediating the lower eight miles of the Lower Passaic River Study Area. The FFS calls for bank-to-bank dredging and capping of the riverbed of that portion of the river and estimates a range of the present value of aggregate remediation costs of approximately $953 million to approximately $1.73 billion, although estimates of the costs and the timing of costs are inherently imprecise. On March 3, 2016, the EPA issued the final Record of Decision (ROD) as to the remedy for the lower eight miles of the Lower Passaic River Study Area, with the maximum estimated cost being reduced by the EPA from $1.73 billion to $1.38 billion, primarily due to a reduction in the amount of cubic yards of material that will be dredged. In October 2016, Occidental Chemical Corporation, the successor to the entity that operated the Diamond Alkali chemical manufacturing facility, reached an agreement with the EPA to develop the design for this proposed remedy at an estimated cost of $165 million. The EPA has estimated that it will take approximately four years to develop this design. On June 30, 2018, Occidental Chemical Corporation sued over 120 parties, including the Company, in the United States District Court for New Jersey seeking recovery of response costs under the Federal Comprehensive Environmental Response, Compensation and Liability Act ("CERCLA"). No final allocations of responsibility have been made among the numerous PRPs that have received notices from the EPA, there are numerous identified PRPs that have not yet received PRP notices from the EPA, and there are likely many PRPs that have not yet been identified. On April 14, 2021, the EPA issued its proposed remedy for the upper nine miles of the river, with an estimated present value cost of approximately $441 million. The proposed remedy would involve dredging and capping of the river sediment as an interim remedy followed by a period of monitoring to evaluate the response of the river system to the interim remedy. When the EPA initiated the allocation process in 2017, it explained that a fair, carefully structured, information-based allocation was necessary to promote settlements. With the completion of the allocation process, in the second quarter of 2021 the EPA began settlement negotiations with the parties that participated in the allocation process, including EnPro. With the ongoing negotiations and estimated remedial costs, we increased our reserve with respect to the Lower Passaic River Study Area by $4.5 million in the third quarter of 2021. With this increase, our reserve for this site at September 30, 2021 was $5.4 million. Further adjustments to our reserve for this site are possible as further information is developed in the course of these discussions. Except with respect to the Lower Passaic River Study Area, we are unable to estimate a reasonably possible range of loss related to any other contingent environmental liability based on our prior ownership of Crucible. See the section entitled “Crucible Steel Corporation a/k/a Crucible, Inc.” in this footnote for additional information. Crucible Steel Corporation a/k/a Crucible, Inc. Crucible, which was engaged primarily in the manufacture and distribution of high technology specialty metal products, was a wholly owned subsidiary of EnPro Holdings until 1983 when its assets and liabilities were distributed to a new subsidiary, Crucible Materials Corporation. EnPro Holdings sold a majority of the outstanding shares of Crucible Materials Corporation in 1985 and divested its remaining minority interest in 2004. Crucible Materials Corporation filed for Chapter 11 bankruptcy protection in May 2009 and is no longer conducting operations. We have certain ongoing obligations, which are included in other liabilities in our Consolidated Balance Sheets, including workers’ compensation, retiree medical and other retiree benefit matters, in addition to those mentioned previously related to EnPro Holdings' period of ownership of Crucible. Based on EnPro Holdings' prior ownership of Crucible, we may have certain additional contingent liabilities, including liabilities in one or more significant environmental matters included in the matters discussed in “Environmental” above. We are investigating these matters. Except with respect to those matters for which we have an accrued liability as discussed in "Environmental" above, we are unable to estimate a reasonably possible range of loss related to these contingent liabilities. Warranties We provide warranties on many of our products. The specific terms and conditions of these warranties vary depending on the product and the market in which the product is sold. We record a liability based upon estimates of the costs we may incur under our warranties after a review of historical warranty experience and information about specific warranty claims. Adjustments are made to the liability as claims data, historical experience, and trends result in changes to our estimate. Changes in the product warranty liability for the nine months ended September 30, 2021 and 2020 are as follows: 2021 2020 (in millions) Balance at beginning of year $ 6.7 $ 10.1 Net charges to expense 1.5 1.4 Settlements made (2.1) (3.5) Balance at end of period $ 6.1 $ 8.0 Asbestos Insurance Receivables The historical business operations of certain of our subsidiaries resulted in a substantial volume of asbestos litigation in which plaintiffs alleged personal injury or death as a result of exposure to asbestos fibers. In 2010, certain of these subsidiaries, including Garlock Sealing Technologies, LLC ("GST"), filed voluntary petitions for reorganization under Chapter 11 of the United States Bankruptcy Code in the U.S. Bankruptcy Court for the Western District of North Carolina (the "Bankruptcy Court"). An additional subsidiary filed a Chapter 11 bankruptcy petition with the Bankruptcy Court in 2017. The filings were part of a claims resolution process for an efficient and permanent resolution of all pending and future asbestos claims through court approval of a plan of reorganization to establish a facility to resolve and pay these asbestos claims. These claims against GST and other subsidiaries were resolved pursuant to a joint plan of reorganization (the "Joint Plan") filed with the Bankruptcy Court which was consummated on July 29, 2017. Under the Joint Plan, GST and EnPro Holdings retained their rights to seek reimbursement under insurance policies for any amounts they have paid in the past to resolve asbestos claims, including contributions made to the asbestos claims resolution trust established under the Joint Plan (the "Trust"). These policies include a number of primary and excess general liability insurance policies that were purchased by EnPro Holdings and were in effect prior to January 1, 1976 (the “Pre-GST Coverage Block”). The policies provide coverage for “occurrences” happening during the policy periods and cover losses associated with product liability claims against EnPro Holdings and certain of its subsidiaries. Asbestos claims against GST are not covered under these policies because GST was not a subsidiary of EnPro Holdings prior to 1976. The Joint Plan provides that EnPro Holdings may retain the first $25 million of any settlements and judgments collected for non-GST asbestos claims related to insurance policies in the Pre-GST Coverage Block and EnPro Holdings and the Trust will share equally in any settlements and judgments EnPro Holdings may collect in excess of $25 million. To date, EnPro Holdings has collected almost $22 million in settlements for non-GST asbestos claims related to the Pre-GST Coverage Block and anticipates further collections once the Trust begins making claims payments on non-GST Claims. As of September 30, 2021, approximately $3.3 million of available products hazard limits or insurance receivables existed under primary and excess general liability insurance policies other than the Pre-GST Coverage Block (the "GST Coverage Block") from solvent carriers, which we believe is available to cover contributions made to the Trust under the Joint Plan as the Trust uses those contributions to pay GST asbestos claims covered by policies in the GST Coverage Block. There are specific agreements in place with carriers regarding the remaining available coverage. In the third quarter of 2021, we received a payment of $0.9 million from an insurer in the GST Coverage Block. We believe that all of the $3.3 million of insurance proceeds will ultimately be collected, although there can be no assurance that the insurance companies will make the payments as and when due. We have billed an insurer in the GST Coverage Block $0.1 million for GST Claims paid by the Trust through September 2021. These amounts are included in Other Assets on our Consolidated Balance Sheet at September 30, 2021. We also believe that EnPro Holdings will bill, and could collect over time, as much as $10 million of insurance coverage for non-GST asbestos claims to reimburse it for Trust payments to non-GST Trust claimants. After EnPro Holdings collects the first approximately $3 million of that coverage, remaining collections for non-GST asbestos claims from the Pre-GST Coverage Block will be shared equally with the Trust. GST has received $8.8 million of insurance recoveries from insolvent carriers since 2007, and may receive additional payments from insolvent carriers in the future. No anticipated insolvent carrier collections are included in the $3.3 million of anticipated collections. The insurance available to cover current and future asbestos claims is from comprehensive general liability and excess liability policies that cover EnPro Holdings and certain of its other subsidiaries in addition to GST for periods prior to 1985 and therefore could be subject to potential competing claims of other covered subsidiaries and their assignees.

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2021
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations On January 21, 2020 we sold our Fairbanks Morse division, which comprised our entire Power Systems segment, for a sales price of $450.0 million. The pre-tax gain on the disposition of Fairbanks Morse was $274.3 million. We have reported, for all periods presented, results of operations and cash flows of Fairbanks Morse as discontinued operations in the accompanying financial statements. Tax expense of $65.9 million on the sale of discontinued operations was recorded for the nine months ended September 30, 2020. This was a decrease in tax expense of $1.9 million in the quarter ended September 30, 2020, which was primarily due to the increase of the foreign derived intangible income ("FDII") tax benefit and a decrease in the global intangible low taxed income ("GILTI") tax expense that are allocated to discontinued operations The results of operations for Fairbanks Morse were as follows: Quarter Ended September 30, 2020 Nine Months Ended September 30, 2020 Net sales $ — $ 7.6 Cost of sales — 7.6 Gross profit — — Operating expenses: Selling, general, and administrative expenses — 1.5 Other — (0.1) Total operating expenses — 1.4 Loss from discontinued operations before income taxes — (1.4) Income tax benefit — 0.3 Loss from discontinued operations, net of taxes — (1.1) Gain from sale of discontinued operations, net of taxes 1.9 208.4 Income from discontinued operations, including gain on sale, net of taxes $ 1.9 $ 207.3

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Agreement to Divest CPI On October 12, 2021, we entered into an Equity and Asset Purchase Agreement (the “Purchase Agreement”) providing for the sale of specified equity interests and assets of our Compressor Products International business ("CPI Business") included in our Engineered Materials segment. In connection with the entry into the Purchase Agreement between us and the buyer we entered into a Put Option Agreement. This agreement irrevocably provides us with the right to require the buyer to purchase all of the shares of CPI-Liard SAS ("CPI France") on terms set forth therein and in the Purchase Agreement (the “Put Option”). The Put Option may be exercised at our sole discretion only following completion of the required employee consultation processes with the employees of CPI France, including with the relevant works councils in France, with respect to such a sale of CPI France. The Purchase Agreement provides for an aggregate purchase price of the CPI Business, including CPI France, of $195.0 million. The purchase price is subject to potential adjustment based on the amount, on the date the transaction is consummated, of cash, debt and working capital of the entities to be sold in the transaction, as well as for the amount of specified selling expenses. We anticipate this sale will result in a pre-tax book gain in excess of $100 million. The completion of the transaction is subject to certain customary closing conditions, including, but not limited to, the absence of any order of a court prohibiting the consummation of the sale and certain regulatory actions, including the expiration or termination of waiting periods administered by, or other required approvals of, specified governmental competition authorities. In addition, the buyer’s obligation to consummate the sale is further conditioned upon the entry by Coltec Industries France SAS into an adherence agreement, agreeing to the sale of all of the shares of CPI France to the buyer on the terms and conditions set forth in the Purchase Agreement, after having exercised the Put Option. The Purchase Agreement does not include a financing condition to the completion of the transaction. We anticipate the sale to close by the end of the first quarter of 2022. Agreement to Acquire NxEdge On November 4, 2021, EnPro Holdings entered into a Purchase and Sale Agreement dated as of November 4, 2021 (the “Purchase Agreement”) with TCFII NxEdge Holdings, LLC (the “Seller”) and TCFII NxEdge LLC (“NxEdge”) providing for the sale by the Seller to EnPro Holdings of all issued and outstanding membership interests of NxEdge (the “Purchase Transaction”) for $850.0 million in cash. The purchase price is subject to potential adjustment based on the amount, on the date the Purchase Transaction is consummated, of cash, debt and working capital of NxEdge, as well as for the amount of specified selling and other expenses of NxEdge. The completion of the Purchase Transaction is subject to certain limited closing conditions, including, but not limited to, the absence of any order of a court prohibiting the consummation of the Purchase Transaction, the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and the absence of a material adverse effect on the financial condition or results of operations of NxEdge and its subsidiaries, taken as a whole, occurring after the date of the Purchase Agreement. The Purchase Agreement does not include a financing condition to EnPro Holdings' obligation to complete the Purchase Transaction. The Purchase Agreement contains customary termination provisions in favor of both EnPro Holdings and the Seller, including a right to terminate the Purchase Agreement if the Purchase Transaction has not been consummated on or prior to May 3, 2022 (or such later date, if any, as EnPro Holdings and the Seller agree upon in writing). The Purchase Agreement does not include provisions for the indemnification by the Seller or EnPro Holdings of the other party following the consummation of the Purchase Transaction (other than limited indemnification by the Seller for a specified matter) and provides that the premiums of any representation and warranty insurance policy obtained by EnPro Holdings with respect to the Purchase Agreement are to be borne by EnPro Holdings. The Purchase Agreement provides that simultaneous with the closing of the Purchase Transaction, EnPro Holdings, the Seller and a specified escrow agent will enter into an escrow agreement under which a portion of the purchase price is to be held in escrow pending resolution of the purchase price adjustment. We intend to fund the payment of the purchase price of the Purchase Transaction with available cash on hand, borrowings under the Revolving Credit Facility and borrowings under new term loan facilities. We have received commitments from a bank lender for a $265 million incremental term loan under the Credit Agreement and for a separate $135 million 364-day term loan facility. In connection with the execution of the Purchase Agreement, on November 4, 2021, we entered into a Subscription Agreement dated as of November 4, 2021 (the “Subscription Agreement”) with the President and Chief Executive Officer of NxEdge, who is also a minority owner of the Seller (the “NxEdge Executive”) pursuant to which we have agreed to issue to the NxEdge Executive, and the NxEdge Executive has agreed to purchase from us, 112,903 shares of our common stock (the “Subscription Shares”) for cash conditioned upon, and to be completed substantially concurrently with, the completion of the Purchase Transaction. The purchase price for the Subscription Shares is $88.571 per share, which was the average of the closing price of our common stock on the New York Stock Exchange for the 20 consecutive trading days preceding the date of

Overview, Basis of Presentati_2

Overview, Basis of Presentation and Recently Issued Authoritative Accounting Guidance (Policies)	9 Months Ended
	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying interim consolidated financial statements are unaudited, and certain related information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been omitted in accordance with Rule 10-01 of Regulation S-X. They were prepared following the same policies and procedures used in the preparation of our annual financial statements except as disclosed below and reflect all adjustments (consisting of normal recurring adjustments) necessary for a fair statement of results for the periods presented. The Consolidated Balance Sheet as of December 31, 2020 was derived from the audited financial statements included in our annual report on Form 10-K for the year ended December 31, 2020. The results of operations for the interim periods are not necessarily indicative of the results for the fiscal year. These consolidated financial statements should be read in conjunction with our annual consolidated financial statements for the year ended December 31, 2020 included within our annual report on Form 10-K. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amount of assets and liabilities and the disclosures regarding contingent assets and liabilities at period end and the reported amounts of revenue and expenses during the reporting period. All intercompany accounts and transactions between our consolidated operations have been eliminated. During March 2021, we identified two errors related to our accounting for the disposal of the Air Springs portion of the heavy-duty trucking business that closed in the fourth quarter of 2020. Such errors resulted in an understatement of the pre-tax loss on disposal for this disposition by approximately $2.0 million and an overstatement of net income by approximately $1.5 million in our previously issued consolidated financial statements for calendar 2020. Net income for calendar 2020 was $184.8 million. We evaluated the errors and concluded that they were not material to our previously issued consolidated financial statements and recorded the pre-tax loss on disposal as an out-of-period adjustment in other income (expense) in our Consolidated Statement of Operations for the first quarter of 2021. Beginning with the first quarter of 2021, we modified the presentation of our Consolidated Statements of Operations to move income from discontinued operations directly following income from continuing operations before calculating a net income subtotal. Consistent with this change in presentation, we also began the Consolidated Statements of Cash Flows with net income rather than net income attributable to EnPro Industries, Inc. We have revised the prior period presented for these two financial statements to conform with this modified presentation. There is no impact to the Consolidated Balance Sheets as a result of this presentation change.

Acquisition and Divestiture (Ta

Acquisition and Divestiture (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combination and Asset Acquisition [Abstract]
Business Acquisition, Pro Forma Information	The following pro forma condensed consolidated financial results of operations for the quarter and nine months ended September 30, 2020 are presented as if the acquisition had been completed prior to 2020: Quarter Ended September 30, 2020 Nine Months Ended September 30, 2020 (in millions) Pro forma net sales $ 276.6 $ 821.6 Pro forma loss from continuing operations $ (21.9) $ (17.0)

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Earnings Per Share	Quarters Ended Nine Months Ended September 30, 2021 2021 2020 2021 2020 (in millions, except per share amounts) Numerator (basic and diluted): Income (loss) from continuing operations, net of tax $ 27.6 $ (21.3) $ 74.9 $ (14.3) Less: net income attributable to redeemable non-controlling interests 0.1 0.3 0.1 0.5 Income (loss) from continuing operations attributable to EnPro Industries, Inc. 27.5 (21.6) 74.8 (14.8) Income from discontinued operations, net of tax — 1.9 — 207.3 Net income (loss) attributable to EnPro Industries, Inc. $ 27.5 $ (19.7) $ 74.8 $ 192.5 Denominator: Weighted-average shares – basic 20.6 20.5 20.6 20.5 Share-based awards 0.1 — 0.2 — Weighted-average shares – diluted 20.7 20.5 20.8 20.5 Basic earnings (loss) per share attributable to EnPro Industries, Inc.: Continuing operations $ 1.34 $ (1.05) $ 3.63 $ (0.72) Discontinued operations — 0.09 — 10.09 Net income (loss) per share $ 1.34 $ (0.96) $ 3.63 $ 9.37 Diluted earnings (loss) per share attributable to EnPro Industries, Inc.: Continuing operations $ 1.33 $ (1.05) $ 3.61 $ (0.72) Discontinued operations — 0.09 — 10.09 Net income (loss) per share $ 1.33 $ (0.96) $ 3.61 $ 9.37 In the quarter and nine months ended September 30, 2020, there were losses from continuing operations attributable to common shares. There were 0.1 million of potentially dilutive shares excluded from the calculation of diluted earnings per share during each of those periods since they were antidilutive.

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2021
Inventory Disclosure [Abstract]
Schedule of Inventories	September 30, December 31, (in millions) Finished products $ 66.0 $ 69.4 Work in process 25.9 24.8 Raw materials and supplies 60.5 48.7 152.4 142.9 Reserve to reduce certain inventories to LIFO basis (4.6) (3.8) Total inventories $ 147.8 $ 139.1

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Changes in Net Carrying Value of Goodwill by Reportable Segment	The changes in the net carrying value of goodwill by reportable segment for the nine months ended September 30, 2021, are as follows: Sealing Advanced Surface Technologies Engineered Total (in millions) Goodwill as of December 31, 2020 $ 297.4 $ 307.7 $ 16.7 $ 621.8 Divestiture of business (13.5) — — (13.5) Foreign currency translation (2.9) 1.2 — (1.7) Goodwill as of September 30, 2021 $ 281.0 $ 308.9 $ 16.7 $ 606.6
Schedule of Identifiable Intangible Assets	Identifiable intangible assets are as follows: As of September 30, 2021 As of December 31, 2020 Gross Accumulated Gross Accumulated (in millions) Amortized: Customer relationships $ 502.4 $ 194.1 $ 505.5 $ 177.8 Existing technology 179.5 50.3 179.6 41.3 Trademarks 43.4 26.3 44.6 25.7 Other 37.3 24.2 37.6 22.3 762.6 294.9 767.3 267.1 Indefinite-Lived: Trademarks 53.3 — 53.4 — Total $ 815.9 $ 294.9 $ 820.7 $ 267.1

Accrued Expenses (Tables)

Accrued Expenses (Tables)	9 Months Ended
	Sep. 30, 2021
Payables and Accruals [Abstract]
Schedule of Accrued Expenses	September 30, December 31, (in millions) Salaries, wages and employee benefits $ 56.5 $ 46.3 Interest 9.5 4.4 Environmental 12.6 12.6 Income taxes 11.9 9.9 Taxes other than income taxes 11.7 9.4 Operating lease liabilities 9.1 10.1 Other 31.5 35.7 $ 142.8 $ 128.4

Pensions and Postretirement B_2

Pensions and Postretirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2021
Retirement Benefits [Abstract]
Schedule of Net Periodic Benefit Cost	The components of net periodic benefit cost for our U.S. and foreign defined benefit pension and other postretirement plans for the quarters and nine months ended September 30, 2021 and 2020, are as follows: Quarters Ended September 30, Nine Months Ended September 30, Pension Benefits Other Benefits Pension Benefits Other Benefits 2021 2020 2021 2020 2021 2020 2021 2020 (in millions) Service cost $ 0.4 $ 1.2 $ — $ — $ 1.2 $ 3.4 $ — $ — Interest cost 2.3 2.5 — — 6.8 7.9 0.1 0.1 Expected return on plan assets (4.5) (4.8) — — (13.6) (14.3) — — Amortization of prior service cost — — — — 0.1 — — — Amortization of net loss (gain) 0.2 1.4 0.1 0.1 0.5 4.0 0.1 (1.0) Curtailment loss — — — — — 0.3 — — Net periodic benefit cost (benefit) $ (1.6) $ 0.3 $ 0.1 $ 0.1 $ (5.0) $ 1.3 $ 0.2 $ (0.9)

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Schedule of Stockholders Equity	Changes in shareholders' equity for the nine months ended September 30, 2021 are as follows: Common Stock Additional Paid-in Capital Retained Earnings Accumulated Other Comprehensive Loss Treasury Stock Total Shareholders' Equity Redeemable Non-controlling Interests (in millions, except per share data) Shares Amount Balance, December 31, 2020 20.5 $ 0.2 $ 289.6 $ 794.8 $ (4.9) $ (1.2) $ 1,078.5 $ 48.4 Net income — — — 18.0 — — 18.0 0.1 Other comprehensive loss — — — — (7.9) — (7.9) (0.5) Dividends ($0.27 per share) — — — (5.7) — — (5.7) — Incentive plan activity 0.1 — 1.2 — — — 1.2 — Other — — (0.1) (3.1) — — (3.2) 3.2 Balance, March 31, 2021 20.6 0.2 290.7 804.0 (12.8) (1.2) 1,080.9 51.2 Net income (loss) — — — 29.3 — — 29.3 (0.1) Other comprehensive income — — — — 11.8 — 11.8 0.6 Dividends ($0.27 per share) — — — (5.6) — (5.6) — Incentive plan activity — — 1.6 — — — 1.6 — Other — — (0.1) 0.2 — — 0.1 (0.1) Balance, June 30, 2021 20.6 0.2 292.2 827.9 (1.0) (1.2) 1,118.1 51.6 Net income — — — 27.5 — — 27.5 0.1 Other comprehensive income (loss) — — — — (1.2) — (1.2) 0.2 Dividends ($0.27 per share) — — — (5.6) — — (5.6) — Other — — (1.0) 2.9 — — 1.9 (1.9) Balance, September 30, 2021 20.6 $ 0.2 $ 291.2 $ 852.7 $ (2.2) $ (1.2) $ 1,140.7 $ 50.0 Changes in shareholders' equity for the nine months ended September 30, 2020 are as follows: Common Stock Additional Paid-in Capital Retained Earnings Accumulated Other Comprehensive Loss Treasury Stock Total Shareholders' Equity Redeemable Non-controlling Interests (in millions, except per share data) Shares Amount Balance, December 31, 2019 20.6 $ 0.2 $ 292.1 $ 632.2 $ (36.4) $ (1.2) $ 886.9 $ 28.0 Adoption of new accounting standard — — — (0.1) — — (0.1) — Net income — — — 218.7 — — 218.7 0.1 Other comprehensive income (loss) — — — — (22.5) — (22.5) 0.9 Dividends ($0.26 per share) — — — (5.3) — — (5.3) — Share repurchases (0.1) — (5.3) — — — (5.3) — Incentive plan activity — — 1.0 — — — 1.0 — Other — — (1.5) — — — (1.5) — Balance, March 31, 2020 20.5 0.2 286.3 845.5 (58.9) (1.2) 1,071.9 29.0 Net income (loss) — — — (6.5) — — (6.5) 0.1 Other comprehensive income — — — — 22.7 — 22.7 0.6 Dividends ($0.26 per share) — — — (5.4) — — (5.4) — Incentive plan activity — — 1.5 — — — 1.5 — Balance, June 30, 2020 20.5 0.2 287.8 833.6 (36.2) (1.2) 1,084.2 29.7 Net income (loss) — — — (19.7) — — (19.7) 0.3 Other comprehensive income — — — — 6.1 — 6.1 0.5 Dividends ($0.26 per share) — — — (5.4) — — (5.4) — Incentive plan activity — — 0.7 — — — 0.7 — Balance, September 30, 2020 20.5 $ 0.2 $ 288.5 $ 808.5 $ (30.1) $ (1.2) $ 1,065.9 $ 30.5
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The option awards issued in 2021 had a fair value of $27.46 per share at their grant date. The following assumptions were used to estimate the fair value of the 2021 option awards: Average expected term 6 years Expected volatility 40.29 % Risk-free interest rate 1.02 % Expected dividend yield 1.35 %

Business Segment Information (T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Schedule of Segment Operating Results and Other Financial Data	Segment operating results and other financial data for the quarters and nine months ended September 30, 2021 and 2020 were as follows: Quarters Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 (in millions) Sales Sealing Technologies $ 146.9 $ 157.8 $ 455.9 $ 482.0 Advanced Surface Technologies 64.3 44.6 178.2 121.3 Engineered Materials 73.8 67.7 234.2 201.4 285.0 270.1 868.3 804.7 Intersegment sales (1.9) (1.8) (7.3) (6.7) Total sales $ 283.1 $ 268.3 $ 861.0 $ 798.0 Adjusted Segment EBITDA Sealing Technologies $ 34.5 $ 32.0 $ 110.8 $ 96.1 Advanced Surface Technologies 19.4 13.4 52.3 31.7 Engineered Materials 8.8 7.9 34.4 21.1 $ 62.7 $ 53.3 $ 197.5 $ 148.9 Reconciliation of Adjusted Segment EBITDA to income (loss) from continuing operations before income taxes Adjusted Segment EBITDA $ 62.7 $ 53.3 $ 197.5 $ 148.9 Acquisition and divestiture expenses (0.3) (1.3) (0.4) (2.6) Non-controlling interest compensation allocation (1.3) (0.5) (4.1) (1.6) Amortization of fair value adjustment to acquisition date inventory (1.0) — (5.8) — Restructuring and impairment expense (0.7) (5.0) (5.2) (23.9) Depreciation and amortization expense (18.3) (17.0) (55.6) (51.5) Corporate expenses (11.6) (11.7) (36.0) (27.3) Interest expense, net (2.6) (3.9) (10.2) (11.4) Other income (expense), net 15.8 (42.5) 15.8 (42.7) Income (loss) from continuing operations before income taxes $ 42.7 $ (28.6) $ 96.0 $ (12.1)
Schedule of Total Assets Segment	Segment assets are as follows: September 30, December 31, (in millions) Sealing Technologies $ 713.1 $ 741.9 Advanced Surface Technologies 758.5 768.2 Engineered Materials 250.5 245.8 Corporate 430.6 327.7 $ 2,152.7 $ 2,083.6
Disaggregation of Revenue	Below is a summary of our third-party sales by major end market with which we did business for the quarters and nine months ended September 30, 2021 and 2020: Quarter Ended September 30, 2021 (in millions) Sealing Technologies Advanced Surface Technologies Engineered Materials Total Aerospace $ 8.4 $ 2.6 $ 1.6 $ 12.6 Automotive 0.6 0.2 13.4 14.2 Chemical and material processing 17.5 — 11.2 28.7 Food and pharmaceutical 16.8 — 0.3 17.1 General industrial 40.9 7.2 27.2 75.3 Medium-duty/heavy-duty truck 43.2 — 2.1 45.3 Oil and gas 4.6 1.0 16.3 21.9 Power generation 8.4 0.1 0.8 9.3 Semiconductors 3.3 52.5 — 55.8 Other 1.8 0.6 0.5 2.9 Total third-party sales $ 145.5 $ 64.2 $ 73.4 $ 283.1 Quarter Ended September 30, 2020 (in millions) Sealing Technologies Advanced Surface Technologies Engineered Materials Total Aerospace $ 10.3 $ 1.7 $ 0.9 $ 12.9 Automotive 0.4 — 14.1 14.5 Chemical and material processing 9.3 — 11.0 20.3 Food and pharmaceutical 12.7 — 0.4 13.1 General industrial 38.6 — 20.3 58.9 Medium-duty/heavy-duty truck 66.0 — 1.4 67.4 Oil and gas 5.2 0.3 17.0 22.5 Power generation 9.5 — 2.3 11.8 Semiconductors 3.5 42.5 — 46.0 Other 0.8 — 0.1 0.9 Total third-party sales $ 156.3 $ 44.5 $ 67.5 $ 268.3 Nine Months Ended September 30, 2021 (in millions) Sealing Technologies Advanced Surface Technologies Engineered Materials Total Aerospace $ 23.4 $ 7.1 $ 4.4 $ 34.9 Automotive 1.6 0.7 48.4 50.7 Chemical and material processing 54.1 — 33.1 87.2 Food and pharmaceutical 49.8 — 1.1 50.9 General industrial 128.5 19.4 88.0 235.9 Medium-duty/heavy-duty truck 129.7 — 7.6 137.3 Oil and gas 14.2 3.4 47.0 64.6 Power generation 29.1 0.1 2.6 31.8 Semiconductors 13.4 145.3 — 158.7 Other 5.9 2.0 1.1 9.0 Total third-party sales $ 449.7 $ 178.0 $ 233.3 $ 861.0 Nine Months Ended September 30, 2020 (in millions) Sealing Technologies Advanced Surface Technologies Engineered Materials Total Aerospace $ 31.1 $ 5.9 $ 4.4 $ 41.4 Automotive 0.8 — 38.2 39.0 Chemical and material processing 35.0 — 32.7 67.7 Food and pharmaceutical 37.5 — 1.2 38.7 General industrial 121.3 — 64.3 185.6 Medium-duty/heavy-duty truck 188.9 — 4.7 193.6 Oil and gas 17.2 1.8 49.3 68.3 Power generation 30.5 — 5.7 36.2 Semiconductors 10.6 113.5 — 124.1 Other 3.2 — 0.2 3.4 Total third-party sales $ 476.1 $ 121.2 $ 200.7 $ 798.0

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2021
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis are summarized as follows: Fair Value Measurements as of September 30, 2021 December 31, 2020 (in millions) Assets Time deposits $ 4.2 $ 4.2 Foreign currency derivatives 4.0 — Deferred compensation assets 10.2 8.6 $ 18.4 $ 12.8 Liabilities Deferred compensation liabilities $ 10.6 $ 8.9 Foreign currency derivatives 0.1 9.5 $ 10.7 $ 18.4
Schedule of Carrying Value of Financial Instruments	The carrying values of our significant financial instruments reflected in the Consolidated Balance Sheets approximated their respective fair values except for the following instruments: September 30, 2021 December 31, 2020 Carrying Fair Carrying Fair (in millions) Long-term debt $ 489.4 $ 509.5 $ 491.3 $ 520.8

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Summary of Changes in Accumulated Other Comprehensive Loss by Component	Changes in accumulated other comprehensive loss by component (after tax) for the quarter ended September 30, 2021 are as follows: (in millions) Unrealized Pension and Total Beginning balance $ 35.3 $ (36.3) $ (1.0) Other comprehensive loss before reclassifications (1.2) — (1.2) Amounts reclassified from accumulated other comprehensive loss — 0.2 0.2 Net current-period other comprehensive income (loss) (1.2) 0.2 (1.0) Less: other comprehensive income attributable to redeemable non-controlling interests 0.2 — 0.2 Net current-period other comprehensive income (loss) attributable to EnPro Industries, Inc. (1.4) 0.2 (1.2) Ending balance $ 33.9 $ (36.1) $ (2.2) Changes in accumulated other comprehensive loss by component (after tax) for the quarter ended September 30, 2020 are as follows: (in millions) Unrealized Pension and Total Beginning balance $ 8.6 $ (44.8) $ (36.2) Other comprehensive income before reclassifications 5.6 — 5.6 Amounts reclassified from accumulated other comprehensive loss — 1.0 1.0 Net current-period other comprehensive income 5.6 1.0 6.6 Less: other comprehensive income attributable to redeemable non-controlling interests 0.5 — 0.5 Net current-period other comprehensive income attributable to EnPro Industries, Inc. 5.1 1.0 6.1 Ending balance $ 13.7 $ (43.8) $ (30.1) Changes in accumulated other comprehensive loss by component (after tax) for the nine months ended September 30, 2021 are as follows: (in millions) Unrealized Pension and Total Beginning balance $ 31.7 $ (36.6) $ (4.9) Other comprehensive income before reclassifications 2.5 — 2.5 Amounts reclassified from accumulated other comprehensive loss — 0.5 0.5 Net current-period other comprehensive income 2.5 0.5 3.0 Less: other comprehensive income attributable to redeemable non-controlling interests 0.3 — 0.3 Net current-period other comprehensive income attributable to EnPro Industries, Inc. 2.2 0.5 2.7 Ending balance $ 33.9 $ (36.1) $ (2.2) Changes in accumulated other comprehensive loss by component (after tax) for the nine months ended September 30, 2020 are as follows: (in millions) Unrealized Pension and Total Beginning balance $ 9.8 $ (46.2) $ (36.4) Other comprehensive income before reclassifications 5.9 — 5.9 Amounts reclassified from accumulated other comprehensive loss — 2.4 2.4 Net current-period other comprehensive income 5.9 2.4 8.3 Less: other comprehensive income attributable to redeemable non-controlling interests 2.0 — 2.0 Net current-period other comprehensive income attributable to EnPro Industries, Inc. 3.9 2.4 6.3 Ending balance $ 13.7 $ (43.8) $ (30.1)
Summary of Reclassifications Out of Accumulated Other Comprehensive Loss	Reclassifications out of accumulated other comprehensive loss for the quarters and nine months ended September 30, 2021 and 2020 are as follows: Details about Accumulated Other Comprehensive Loss Components Amount Reclassified from Accumulated Other Affected Statement of Quarters Ended Nine Months Ended (in millions) 2021 2020 2021 2020 Pension and other postretirement plans adjustments: Actuarial losses $ 0.3 $ 1.5 $ 0.6 $ 3.0 (1) Prior service costs — — 0.1 — (1) Curtailment — — — 0.3 (1) Total before tax 0.3 1.5 0.7 3.3 Income before income taxes Tax benefit (0.1) (0.5) (0.2) (0.9) Income tax expense Net of tax $ 0.2 $ 1.0 $ 0.5 $ 2.4 Net income (1) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. As these are components of net periodic pension cost other than service cost, the affected Statement of Operations captions are other income (expense) and income from discontinued operations, including gain on sale, net of taxes (See Note 9, “Pensions and Postretirement Benefits ” for additional details).

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Changes in Carrying Amount of Product Warranty Liability	Changes in the product warranty liability for the nine months ended September 30, 2021 and 2020 are as follows: 2021 2020 (in millions) Balance at beginning of year $ 6.7 $ 10.1 Net charges to expense 1.5 1.4 Settlements made (2.1) (3.5) Balance at end of period $ 6.1 $ 8.0

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2021
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	The results of operations for Fairbanks Morse were as follows: Quarter Ended September 30, 2020 Nine Months Ended September 30, 2020 Net sales $ — $ 7.6 Cost of sales — 7.6 Gross profit — — Operating expenses: Selling, general, and administrative expenses — 1.5 Other — (0.1) Total operating expenses — 1.4 Loss from discontinued operations before income taxes — (1.4) Income tax benefit — 0.3 Loss from discontinued operations, net of taxes — (1.1) Gain from sale of discontinued operations, net of taxes 1.9 208.4 Income from discontinued operations, including gain on sale, net of taxes $ 1.9 $ 207.3

Overview, Basis of Presentati_3

Overview, Basis of Presentation and Recently Issued Authoritative Accounting Guidance - Narratives (Details) $ in Millions	Sep. 02, 2021USD ($)	Mar. 31, 2021potentiallyResponsibleParty	Sep. 30, 2021USD ($)	Mar. 31, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
New Accounting Pronouncements or Change in Accounting Principle
Number of errors identified | potentiallyResponsibleParty		2
Other loss	$ (19.5)
Net income (loss) attributable to EnPro Industries, Inc.			$ 27.5		$ (19.7)	$ 74.8	$ 192.5	$ 184.8
Scenario, Adjustment
New Accounting Pronouncements or Change in Accounting Principle
Other loss				$ 2
Net income (loss) attributable to EnPro Industries, Inc.				$ (1.5)

Acquisition and Divestiture - A

Acquisition and Divestiture - Additional Information (Details) $ in Millions	Sep. 02, 2021USD ($)	Sep. 02, 2021USD ($)	Oct. 26, 2020location
Business Acquisition
Gain on disposal of business unit	$ 19.5
Sealing Technologies | Disposal by Sale
Business Acquisition
Net sales		$ 20
Alluxa, Inc.,
Business Acquisition
Number of locations (locations) | location			2

Acquisition and Divestiture - P

Acquisition and Divestiture - Proforma Results (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Business Acquisition, Pro Forma Information
Pro forma net sales	$ 276.6	$ 821.6
Pro forma loss from continuing operations	$ (21.9)	$ (17)

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Contingency [Line Items]
Effective tax rate		35.40%	25.40%	21.90%	(17.90%)
Subsequent Event
Income Tax Contingency [Line Items]
Income taxes receivable	$ 24.7
Interest income	$ 1.2

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Numerator (basic and diluted):
Income (loss) from continuing operations, net of tax	$ 27.6	$ (21.3)	$ 74.9	$ (14.3)
Less: net income attributable to redeemable non-controlling interests	0.1	0.3	0.1	0.5
Income (loss) from continuing operations attributable to EnPro Industries, Inc.	27.5	(21.6)	74.8	(14.8)
Income from discontinued operations, including gain on sale, net of tax	0	1.9	0	207.3
Net income (loss) attributable to EnPro Industries, Inc.	$ 27.5	$ (19.7)	$ 74.8	$ 192.5	$ 184.8
Denominator:
Weighted-average shares – basic (in shares)	20.6	20.5	20.6	20.5
Share-based awards (in shares)	0.1	0	0.2	0
Weighted-average shares – diluted (in shares)	20.7	20.5	20.8	20.5
Basic earnings (loss) per share attributable to EnPro Industries, Inc.:
Continuing operations (in dollars per share)	$ 1.34	$ (1.05)	$ 3.63	$ (0.72)
Discontinued operations (in dollars per share)	0	0.09	0	10.09
Net income per share (in dollars per share)	1.34	(0.96)	3.63	9.37
Diluted earnings (loss) per share attributable to EnPro Industries, Inc.:
Continuing operations (in dollars per share)	1.33	(1.05)	3.61	(0.72)
Discontinued operations (in dollars per share)	0	0.09	0	10.09
Net income per share (in dollars per share)	$ 1.33	$ (0.96)	$ 3.61	$ 9.37
Antidilutive securities excluded (in shares)		0.1		0.1

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Finished products	$ 66	$ 69.4
Work in process	25.9	24.8
Raw materials and supplies	60.5	48.7
Gross inventories	152.4	142.9
Reserve to reduce certain inventories to LIFO basis	(4.6)	(3.8)
Total inventories	$ 147.8	$ 139.1

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Schedule of Changes in Net Carrying Value of Goodwill by Reportable Segment (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Goodwill
Goodwill, beginning balance	$ 621.8
Divestiture of business	(13.5)
Foreign currency translation	(1.7)
Goodwill, ending balance	606.6
Sealing Technologies
Goodwill
Goodwill, beginning balance	297.4
Divestiture of business	(13.5)
Foreign currency translation	(2.9)
Goodwill, ending balance	281
Advanced Surface Technologies
Goodwill
Goodwill, beginning balance	307.7
Divestiture of business	0
Foreign currency translation	1.2
Goodwill, ending balance	308.9
Engineered Materials
Goodwill
Goodwill, beginning balance	16.7
Divestiture of business	0
Foreign currency translation	0
Goodwill, ending balance	$ 16.7

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Identifiable Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 762.6	$ 767.3
Accumulated Amortization	294.9	267.1
Total	815.9	820.7
Trademarks
Indefinite-lived Intangible Assets
Indefinite-Lived:	53.3	53.4
Customer relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	502.4	505.5
Accumulated Amortization	194.1	177.8
Existing technology
Finite-Lived Intangible Assets
Gross Carrying Amount	179.5	179.6
Accumulated Amortization	50.3	41.3
Trademarks
Finite-Lived Intangible Assets
Gross Carrying Amount	43.4	44.6
Accumulated Amortization	26.3	25.7
Other
Finite-Lived Intangible Assets
Gross Carrying Amount	37.3	37.6
Accumulated Amortization	$ 24.2	$ 22.3

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Segment Reporting Information
Amortization expense	$ 11.1	$ 8.9	$ 33.7	$ 26.8
Sealing Technologies
Segment Reporting Information
Accumulated impairment losses	27.8		27.8		$ 27.8
Engineered Materials
Segment Reporting Information
Accumulated impairment losses	$ 154.8		$ 154.8		$ 154.8

Accrued Expenses - Schedule of

Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Salaries, wages and employee benefits	$ 56.5	$ 46.3
Interest	9.5	4.4
Environmental	12.6	12.6
Income taxes	11.9	9.9
Taxes other than income taxes	11.7	9.4
Operating lease liabilities	9.1	10.1
Other	31.5	35.7
Accrued expenses	$ 142.8	$ 128.4

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($)	Sep. 25, 2019	Sep. 30, 2021	Oct. 31, 2018
Revolving Credit Facility
Line of Credit Facility
Expansion threshold	$ 225,000,000
Expansion threshold (percent)	100.00%
Capacity available for specific purpose		$ 100,000,000
Credit facility borrowing capacity		388,500,000
Letter of credit outstanding		$ 11,500,000
Revolving Credit Facility | LIBOR
Line of Credit Facility
Basis spread on variable rate (percent)		1.50%
Revolving Credit Facility | Base Rate
Line of Credit Facility
Basis spread on variable rate (percent)		0.50%
Line of Credit | Revolving Credit Facility
Line of Credit Facility
Debt term	5 years
Borrowing capacity	$ 400,000,000
Commitment fee on unused amount		0.175%
Term Loan
Line of Credit Facility
Periodic payment, years one to three, percentage of original principal amount (percent)		2.50%
Loan facility for one year (percent)		5.00%
Loan facility for two years (percent)		1.25%
Term Loan | Revolving Credit Facility
Line of Credit Facility
Borrowing capacity	$ 150,000,000
Long-term line of credit		$ 142,500,000
Senior Notes
Line of Credit Facility
Senior notes			$ 350,000,000
Stated interest rate (percent)			5.75%

Pensions and Postretirement B_3

Pensions and Postretirement Benefits - Schedule of Net Periodic Benefit Cost (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Pension Benefits
Defined Benefit Plan Disclosure
Service cost	$ 400,000	$ 1,200,000	$ 1,200,000	$ 3,400,000
Interest cost	2,300,000	2,500,000	6,800,000	7,900,000
Expected return on plan assets	(4,500,000)	(4,800,000)	(13,600,000)	(14,300,000)
Amortization of prior service cost	0	0	100,000	0
Amortization of net loss (gain)	200,000	1,400,000	500,000	4,000,000
Curtailment loss	0	0	0	300,000
Net periodic benefit cost (benefit)	(1,600,000)	300,000	(5,000,000)	1,300,000
Other Benefits
Defined Benefit Plan Disclosure
Service cost	0	0	0	0
Interest cost	0	0	100,000	100,000
Expected return on plan assets	0	0	0	0
Amortization of prior service cost	0	0	0	0
Amortization of net loss (gain)	100,000	100,000	100,000	(1,000,000)
Curtailment loss	0	0	0	0
Net periodic benefit cost (benefit)	$ 100,000	$ 100,000	200,000	$ (900,000)
U.S.
Defined Benefit Plan Disclosure
Contributions by employer			$ 0

Shareholders' Equity - Changes

Shareholders' Equity - Changes in Shareholders' Equity (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Increase (Decrease) in Stockholders' Equity
Net income (loss)	$ 27.6			$ (19.4)			$ 74.9	$ 193
Other comprehensive loss	$ (1)			$ 6.6			3	8.3
Cash dividends per share, declared (in dollars per share)	$ 0.27	$ 0.27	$ 0.27	$ 0.26	$ 0.26	$ 0.26
Total Shareholders' Equity
Increase (Decrease) in Stockholders' Equity
Beginning balance	$ 1,118.1	$ 1,080.9	$ 1,078.5	$ 1,084.2	$ 1,071.9	$ 886.9	1,078.5	886.9
Net income (loss)	27.5	29.3	18	(19.7)	(6.5)	218.7
Other comprehensive loss	(1.2)	11.8	(7.9)	6.1	22.7	(22.5)
Dividends	(5.6)	(5.6)	(5.7)	(5.4)	(5.4)	(5.3)
Share repurchases						(5.3)
Incentive plan activity		1.6	1.2	0.7	1.5	1
Other	1.9	0.1	(3.2)			(1.5)
Ending balance	1,140.7	1,118.1	1,080.9	1,065.9	1,084.2	1,071.9	1,140.7	1,065.9
Total Shareholders' Equity | Cumulative Effect, Period of Adoption, Adjustment
Increase (Decrease) in Stockholders' Equity
Beginning balance						(0.1)		(0.1)
Common Stock
Increase (Decrease) in Stockholders' Equity
Beginning balance	$ 0.2	$ 0.2	$ 0.2	$ 0.2	$ 0.2	$ 0.2	$ 0.2	$ 0.2
Balance (in shares)	20.6	20.6	20.5	20.5	20.5	20.6	20.5	20.6
Shares repurchases (in shares)						(0.1)
Incentive plan activity (in shares)			0.1
Ending balance	$ 0.2	$ 0.2	$ 0.2	$ 0.2	$ 0.2	$ 0.2	$ 0.2	$ 0.2
Balance (in shares)	20.6	20.6	20.6	20.5	20.5	20.5	20.6	20.5
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity
Beginning balance	$ 292.2	$ 290.7	$ 289.6	$ 287.8	$ 286.3	$ 292.1	$ 289.6	$ 292.1
Share repurchases						(5.3)
Incentive plan activity		1.6	1.2	0.7	1.5	1
Other	(1)	(0.1)	(0.1)			(1.5)
Ending balance	291.2	292.2	290.7	288.5	287.8	286.3	291.2	288.5
Retained Earnings
Increase (Decrease) in Stockholders' Equity
Beginning balance	827.9	804	794.8	833.6	845.5	632.2	794.8	632.2
Net income (loss)	27.5	29.3	18	(19.7)	(6.5)	218.7
Dividends	(5.6)	(5.6)	(5.7)	(5.4)	(5.4)	(5.3)
Other	2.9	0.2	(3.1)
Ending balance	852.7	827.9	804	808.5	833.6	845.5	852.7	808.5
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment
Increase (Decrease) in Stockholders' Equity
Beginning balance						(0.1)		(0.1)
Accumulated Other Comprehensive Loss
Increase (Decrease) in Stockholders' Equity
Beginning balance	(1)	(12.8)	(4.9)	(36.2)	(58.9)	(36.4)	(4.9)	(36.4)
Other comprehensive loss	(1.2)	11.8	(7.9)	6.1	22.7	(22.5)
Ending balance	(2.2)	(1)	(12.8)	(30.1)	(36.2)	(58.9)	(2.2)	(30.1)
Accumulated Other Comprehensive Loss | Cumulative Effect, Period of Adoption, Adjustment
Increase (Decrease) in Stockholders' Equity
Beginning balance						0		0
Treasury Stock
Increase (Decrease) in Stockholders' Equity
Beginning balance	(1.2)	(1.2)	(1.2)	(1.2)	(1.2)	(1.2)	(1.2)	(1.2)
Ending balance	(1.2)	(1.2)	(1.2)	(1.2)	(1.2)	(1.2)	(1.2)	(1.2)
Redeemable Non-controlling Interests
Increase (Decrease) in Stockholders' Equity
Beginning balance	51.6	51.2	48.4	29.7	29	28	48.4	28
Net income (loss)	0.1	(0.1)	0.1	0.3	0.1	0.1
Other comprehensive loss	0.2	0.6	(0.5)	0.5	0.6	0.9
Other	(1.9)	(0.1)	3.2
Ending balance	$ 50	$ 51.6	$ 51.2	$ 30.5	$ 29.7	$ 29	$ 50	$ 30.5

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, shares in Millions

Nov. 05, 2021

Feb. 28, 2021

Sep. 30, 2021

Jun. 30, 2021

Mar. 31, 2021

Sep. 30, 2020

Jun. 30, 2020

Mar. 31, 2020

Sep. 30, 2021

Sep. 30, 2020

Oct. 31, 2020

Oct. 31, 2018

Subsequent Event

Dividends paid

$ 16,800,000

$ 16,200,000

Cash dividends per share, declared (in dollars per share)

$ 0.27

$ 0.27

$ 0.27

$ 0.26

$ 0.26

$ 0.26

Repurchase of common stock

$ 0

$ 5,300,000

Employee Stock Options

Subsequent Event

Option term

10 years

Average expected term

6 years

Fair value (in dollars per share)

$ 27.46

Common Stock

Subsequent Event

Shares repurchases (in shares)

0.1

0.3

Common Stock | Employee Stock Options

Subsequent Event

Options issued (in shares)

0.1

Exercise price (in dollars per share)

$ 80

Share Repurchase Plan

Subsequent Event

Stock repurchase program, authorized amount (up to)

$ 50,000,000

$ 50,000,000

Repurchase of common stock

$ 5,300,000

$ 20,300,000

Subsequent Event

Subsequent Event

Cash dividends per share, declared (in dollars per share)

$ 0.27

Shareholders' Equity - Schedule

Shareholders' Equity - Schedule of Assumptions Used (Details) - Employee Stock Options	9 Months Ended
	Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award
Average expected term	6 years
Expected volatility	40.29%
Risk-free interest rate	1.02%
Expected dividend yield	1.35%

Business Segment Information -

Business Segment Information - Additional Information (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)segment
Segment Reporting [Abstract]
Number of reportable segments | segment	3
Performance obligation | $	$ 298.3
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Segment Reporting Information
Remaining performance obligation, percentage	96.00%
Remaining performance obligation, expected timing	1 year

Business Segment Information _2

Business Segment Information - Schedule of Segment Operating Results and Other Financial Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information
Net sales	$ 283.1	$ 268.3	$ 861	$ 798
Adjusted Segment EBITDA	62.7	53.3	197.5	148.9
Acquisition and divestiture expenses	(0.3)	(1.3)	(0.4)	(2.6)
Non-controlling interest compensation allocation	(1.3)	(0.5)	(4.1)	(1.6)
Amortization of fair value adjustment to acquisition date inventory	(1)	0	(5.8)	0
Restructuring and impairment expense	(0.7)	(5)	(5.2)	(23.9)
Depreciation and amortization expense	(18.3)	(17)	(55.6)	(51.5)
Interest expense, net	(2.6)	(3.9)	(10.2)	(11.4)
Other income (expense)	16.7	(17.2)	18.5	(15.5)
Income (loss) from continuing operations before income taxes	42.7	(28.6)	96	(12.1)
Operating segments
Segment Reporting Information
Net sales	285	270.1	868.3	804.7
Intersegment sales
Segment Reporting Information
Net sales	(1.9)	(1.8)	(7.3)	(6.7)
Corporate
Segment Reporting Information
Corporate expenses	(11.6)	(11.7)	(36)	(27.3)
Segment Reconciling Items
Segment Reporting Information
Other income (expense)	15.8	(42.5)	15.8	(42.7)
Sealing Technologies
Segment Reporting Information
Net sales	145.5	156.3	449.7	476.1
Sealing Technologies | Operating segments
Segment Reporting Information
Net sales	146.9	157.8	455.9	482
Adjusted Segment EBITDA	34.5	32	110.8	96.1
Advanced Surface Technologies
Segment Reporting Information
Net sales	64.2	44.5	178	121.2
Advanced Surface Technologies | Operating segments
Segment Reporting Information
Net sales	64.3	44.6	178.2	121.3
Adjusted Segment EBITDA	19.4	13.4	52.3	31.7
Engineered Materials
Segment Reporting Information
Net sales	73.4	67.5	233.3	200.7
Engineered Materials | Operating segments
Segment Reporting Information
Net sales	73.8	67.7	234.2	201.4
Adjusted Segment EBITDA	$ 8.8	$ 7.9	$ 34.4	$ 21.1

Business Segment Information _3

Business Segment Information - Schedule of Assets and Long Lived Assets Segment (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Segment Reporting Information
Assets	$ 2,152.7	$ 2,083.6
Operating segments | Sealing Technologies
Segment Reporting Information
Assets	713.1	741.9
Operating segments | Advanced Surface Technologies
Segment Reporting Information
Assets	758.5	768.2
Operating segments | Engineered Materials
Segment Reporting Information
Assets	250.5	245.8
Corporate
Segment Reporting Information
Assets	$ 430.6	$ 327.7

Business Segment Information _4

Business Segment Information - Revenue by End Market (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue
Net sales	$ 283.1	$ 268.3	$ 861	$ 798
Sealing Technologies
Disaggregation of Revenue
Net sales	145.5	156.3	449.7	476.1
Advanced Surface Technologies
Disaggregation of Revenue
Net sales	64.2	44.5	178	121.2
Engineered Materials
Disaggregation of Revenue
Net sales	73.4	67.5	233.3	200.7
Aerospace
Disaggregation of Revenue
Net sales	12.6	12.9	34.9	41.4
Aerospace | Sealing Technologies
Disaggregation of Revenue
Net sales	8.4	10.3	23.4	31.1
Aerospace | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	2.6	1.7	7.1	5.9
Aerospace | Engineered Materials
Disaggregation of Revenue
Net sales	1.6	0.9	4.4	4.4
Automotive
Disaggregation of Revenue
Net sales	14.2	14.5	50.7	39
Automotive | Sealing Technologies
Disaggregation of Revenue
Net sales	0.6	0.4	1.6	0.8
Automotive | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	0.2	0	0.7	0
Automotive | Engineered Materials
Disaggregation of Revenue
Net sales	13.4	14.1	48.4	38.2
Automotive | Engineered Materials | Scenario, Adjustment
Disaggregation of Revenue
Net sales		(2.6)		(6.3)
Chemical and material processing
Disaggregation of Revenue
Net sales	28.7	20.3	87.2	67.7
Chemical and material processing | Sealing Technologies
Disaggregation of Revenue
Net sales	17.5	9.3	54.1	35
Chemical and material processing | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	0	0	0	0
Chemical and material processing | Engineered Materials
Disaggregation of Revenue
Net sales	11.2	11	33.1	32.7
Food and pharmaceutical
Disaggregation of Revenue
Net sales	17.1	13.1	50.9	38.7
Food and pharmaceutical | Sealing Technologies
Disaggregation of Revenue
Net sales	16.8	12.7	49.8	37.5
Food and pharmaceutical | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	0	0	0	0
Food and pharmaceutical | Engineered Materials
Disaggregation of Revenue
Net sales	0.3	0.4	1.1	1.2
General industrial
Disaggregation of Revenue
Net sales	75.3	58.9	235.9	185.6
General industrial | Sealing Technologies
Disaggregation of Revenue
Net sales	40.9	38.6	128.5	121.3
General industrial | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	7.2	0	19.4	0
General industrial | Engineered Materials
Disaggregation of Revenue
Net sales	27.2	20.3	88	64.3
General industrial | Engineered Materials | Scenario, Adjustment
Disaggregation of Revenue
Net sales		4.4		10.3
Medium-duty/heavy-duty truck
Disaggregation of Revenue
Net sales	45.3	67.4	137.3	193.6
Medium-duty/heavy-duty truck | Sealing Technologies
Disaggregation of Revenue
Net sales	43.2	66	129.7	188.9
Medium-duty/heavy-duty truck | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	0	0	0	0
Medium-duty/heavy-duty truck | Engineered Materials
Disaggregation of Revenue
Net sales	2.1	1.4	7.6	4.7
Medium-duty/heavy-duty truck | Engineered Materials | Scenario, Adjustment
Disaggregation of Revenue
Net sales		1.4		4.6
Oil and gas
Disaggregation of Revenue
Net sales	21.9	22.5	64.6	68.3
Oil and gas | Sealing Technologies
Disaggregation of Revenue
Net sales	4.6	5.2	14.2	17.2
Oil and gas | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	1	0.3	3.4	1.8
Oil and gas | Engineered Materials
Disaggregation of Revenue
Net sales	16.3	17	47	49.3
Power generation
Disaggregation of Revenue
Net sales	9.3	11.8	31.8	36.2
Power generation | Sealing Technologies
Disaggregation of Revenue
Net sales	8.4	9.5	29.1	30.5
Power generation | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	0.1	0	0.1	0
Power generation | Engineered Materials
Disaggregation of Revenue
Net sales	0.8	2.3	2.6	5.7
Power generation | Engineered Materials | Scenario, Adjustment
Disaggregation of Revenue
Net sales		(3.2)		(8.6)
Semiconductors
Disaggregation of Revenue
Net sales	55.8	46	158.7	124.1
Semiconductors | Sealing Technologies
Disaggregation of Revenue
Net sales	3.3	3.5	13.4	10.6
Semiconductors | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	52.5	42.5	145.3	113.5
Semiconductors | Engineered Materials
Disaggregation of Revenue
Net sales	0	0	0	0
Other
Disaggregation of Revenue
Net sales	2.9	0.9	9	3.4
Other | Sealing Technologies
Disaggregation of Revenue
Net sales	1.8	0.8	5.9	3.2
Other | Advanced Surface Technologies
Disaggregation of Revenue
Net sales	0.6	0	2	0
Other | Engineered Materials
Disaggregation of Revenue
Net sales	$ 0.5	$ 0.1	$ 1.1	$ 0.2

Derivatives and Hedging (Detail

Derivatives and Hedging (Details) € in Millions	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)	May 31, 2019USD ($)	May 31, 2019EUR (€)	Sep. 30, 2018USD ($)	Sep. 30, 2018EUR (€)
Derivative
Derivative asset	$ 4,000,000	$ 0
Derivative liability	100,000	$ 9,500,000
Currency Swap
Derivative
Notional amount			$ 100,000,000		$ 200,000,000
Amount of hedged item | €				€ 89.6		€ 172.8
Weighted average interest rate			3.50%	3.50%	2.80%	2.80%
Derivative asset	4,000,000
Derivative liability	$ 100,000

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Assets
Time deposits	$ 4.2	$ 4.2
Foreign currency derivatives	4	0
Deferred compensation assets	10.2	8.6
Assets	18.4	12.8
Liabilities
Deferred compensation liabilities	10.6	8.9
Foreign currency derivatives	0.1	9.5
Liabilities	$ 10.7	$ 18.4

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Carrying Value of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Carrying Value	$ 489.4	$ 491.3
Fair Value	$ 509.5	$ 520.8

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Summary of Changes in Accumulated Other Comprehensive Loss by Component (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Accumulated Other Comprehensive Income
Beginning balance			$ 1,078.5				$ 1,078.5
Other comprehensive income (loss) before reclassifications	$ (1.2)			$ 5.6			2.5	$ 5.9
Amounts reclassified from accumulated other comprehensive loss	0.2			1			0.5	2.4
Net current-period other comprehensive income (loss)	(1)			6.6			3	8.3
Less: other comprehensive income attributable to redeemable non-controlling interests	0.2			0.5			0.3	2
Net current-period other comprehensive income (loss) attributable to EnPro Industries, Inc.	(1.2)			6.1			2.7	6.3
Ending balance	1,140.7						1,140.7
Total
Accumulated Other Comprehensive Income
Beginning balance	(1)		(4.9)	(36.2)		$ (36.4)	(4.9)	(36.4)
Net current-period other comprehensive income (loss)	(1.2)	$ 11.8	(7.9)	6.1	$ 22.7	(22.5)
Ending balance	(2.2)	(1)		(30.1)	(36.2)		(2.2)	(30.1)
Unrealized Translation Adjustments
Accumulated Other Comprehensive Income
Beginning balance	35.3		31.7	8.6		9.8	31.7	9.8
Other comprehensive income (loss) before reclassifications	(1.2)			5.6			2.5	5.9
Amounts reclassified from accumulated other comprehensive loss	0			0			0	0
Net current-period other comprehensive income (loss)	(1.2)			5.6			2.5	5.9
Less: other comprehensive income attributable to redeemable non-controlling interests	0.2			0.5			0.3	2
Net current-period other comprehensive income (loss) attributable to EnPro Industries, Inc.	(1.4)			5.1			2.2	3.9
Ending balance	33.9	35.3		13.7	8.6		33.9	13.7
Pension and Other Postretirement Plans
Accumulated Other Comprehensive Income
Beginning balance	(36.3)		$ (36.6)	(44.8)		$ (46.2)	(36.6)	(46.2)
Other comprehensive income (loss) before reclassifications	0			0			0	0
Amounts reclassified from accumulated other comprehensive loss	0.2			1			0.5	2.4
Net current-period other comprehensive income (loss)	0.2			1			0.5	2.4
Less: other comprehensive income attributable to redeemable non-controlling interests	0			0			0	0
Net current-period other comprehensive income (loss) attributable to EnPro Industries, Inc.	0.2			1			0.5	2.4
Ending balance	$ (36.1)	$ (36.3)		$ (43.8)	$ (44.8)		$ (36.1)	$ (43.8)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss - Summary of Reclassifications Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Other income (expense)	$ 16.7	$ (17.2)	$ 18.5	$ (15.5)
Tax benefit	(15.1)	7.3	(21.1)	(2.2)
Net of tax	27.6	(19.4)	74.9	193
Reclassification out of accumulated other comprehensive income
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Income before income taxes	0.3	1.5	0.7	3.3
Tax benefit	(0.1)	(0.5)	(0.2)	(0.9)
Net of tax	0.2	1	0.5	2.4
Reclassification out of accumulated other comprehensive income | Actuarial losses
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Other income (expense)	0.3	1.5	0.6	3
Reclassification out of accumulated other comprehensive income | Prior service costs
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Other income (expense)	0	0	0.1	0
Reclassification out of accumulated other comprehensive income | Curtailment
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Other income (expense)	$ 0	$ 0	$ 0	$ 0.3

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details)	Apr. 14, 2021USD ($)mi	Jun. 30, 2018site	Oct. 31, 2016USD ($)	Mar. 03, 2016USD ($)	Apr. 11, 2014USD ($)mi	Sep. 30, 2021USD ($)sitemi	Sep. 30, 2021USD ($)potentiallyResponsiblePartysitemi	Oct. 18, 2021	Dec. 31, 2020USD ($)	Apr. 30, 2015USD ($)
Site Contingency
Number of sites subject to remediation (sites) | site						20	20
Number of sites, cost in excess of 100K (sites) | site						14	14
Cost per site minimis threshold							$ 100,000
Number of sites, discontinued operations (sites) | site						18	18
Number of sites, active operations (sites) | site						2	2
Number of sites, investigation completed (sites) | site						16	16
Number of sites investigation in progress (sites) | site						3	3
Environmental loss accrual						$ 42,900,000	$ 42,900,000		$ 42,200,000
Environmental						12,600,000	12,600,000		$ 12,600,000
Estimated insurance recoveries						25,000,000	25,000,000
Insurance recoveries to date							22,000,000
Estimated recovery for non-GST Trust claimants						10,000,000	10,000,000
Threshold of recovery before shared in trust						3,000,000	$ 3,000,000
Lower Passaic River
Site Contingency
Portion of site subject to remediation (miles) | mi					8
Number of other potentially responsible parties		120					70
Estimate of cost										$ 726,000,000
Estimate low end			$ 165,000,000
Estimated development time			4 years
Lower eight miles of river
Site Contingency
Environmental loss accrual						5,400,000	$ 5,400,000
Increase to environmental loss accrual						4,500,000
Upper nine miles of the river
Site Contingency
Portion of site subject to remediation (miles) | mi	9
Site contingency, loss exposure in excess of accrual best estimate	$ 441,000,000
Arizona Uranium Mines
Site Contingency
Environmental loss accrual						13,400,000	13,400,000
Future contributions from U.S.						3,800,000	3,800,000
Future contributions from U.S., current						1,400,000	1,400,000
Future contributions from U.S., non-current						2,400,000	2,400,000
Arizona Uranium Mines | Subsequent Event
Site Contingency
Percentage of expenses reimbursable by the U.S.								35.00%
Minimum | Lower Passaic River
Site Contingency
Site contingency, loss exposure in excess of accrual best estimate				$ 1,380,000,000	$ 953,000,000
Maximum | Lower Passaic River
Site Contingency
Site contingency, loss exposure in excess of accrual best estimate				$ 1,730,000,000
Asbestos Issue
Site Contingency
Insurance coverage received payment						900,000
Insurance coverage amount						3,300,000	3,300,000
Estimated insurance recoveries, current year						100,000	100,000
Asbestos Issue | GST, LLC
Site Contingency
Insurance recoveries from insolvent carriers						$ 8,800,000	$ 8,800,000
Affiliated Entity | Crucible Steel Corporation
Site Contingency
Portion of site subject to remediation (miles) | mi						17	17

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Changes in Carrying Amount of Product Warranty Liability (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Movement in Standard Product Warranty Accrual
Balance at beginning of year	$ 6.7	$ 10.1
Net charges to expense	1.5	1.4
Settlements made	(2.1)	(3.5)
Balance at end of year	$ 6.1	$ 8

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Details) - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions	Jan. 21, 2020	Sep. 30, 2020	Sep. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Tax expense, discontinued operations			$ 65.9
Increase (decrease) in tax expense		$ 1.9
Fairbanks Morse
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Proceeds from sale of investment projects	$ 450
The pre-tax gain on the disposition	$ 274.3

Discontinued Operations - Resul

Discontinued Operations - Results of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating expenses:
Loss from discontinued operations, net of taxes			$ 0	$ 207.3
Income from discontinued operations, including gain on sale, net of taxes	$ 0	$ 1.9	$ 0	207.3
Discontinued Operations, Disposed of by Sale | Fairbanks Morse
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations
Net sales		0		7.6
Cost of sales		0		7.6
Gross profit		0		0
Operating expenses:
Selling, general, and administrative expenses		0		1.5
Other		0		(0.1)
Total operating expenses		0		1.4
Loss from discontinued operations before income taxes		0		(1.4)
Income tax benefit		0		0.3
Loss from discontinued operations, net of taxes		0		(1.1)
Gain from sale of discontinued operations, net of taxes		1.9		208.4
Income from discontinued operations, including gain on sale, net of taxes		$ 1.9		$ 207.3

Subsequent Events (Details)

Subsequent Events (Details)	Nov. 04, 2021USD ($)tradingDay$ / sharesshares	Oct. 12, 2021USD ($)	Sep. 02, 2021USD ($)
Subsequent Event
Pre-tax book gain			$ 19,500,000
Subsequent Event | Line of Credit | Incremental Tem Loan
Subsequent Event
Borrowing capacity	$ 265,000,000
Subsequent Event | Line of Credit | A364 Days Term Loan Facility
Subsequent Event
Borrowing capacity	$ 135,000,000
Subsequent Event | Plan | Subscription Agreement
Subsequent Event
Consecutive trading days | tradingDay	20
Purchase of shares, holding period (years)	2 years
Subsequent Event | Plan | Common Stock | Subscription Agreement
Subsequent Event
Number of shares (in shares) | shares	112,903
Purchase price (in usd per share) | $ / shares	$ 88.571
Subsequent Event | Plan | NxEdge
Subsequent Event
Payments to acquire entity	$ 850,000,000
Subsequent Event | CPI Business | Disposal by Sale | Plan
Subsequent Event
Aggregate purchase price		$ 195,000,000
Pre-tax book gain		$ 100,000,000