Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Jul. 29, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2019
Document Transition Report	false
Entity File Number	001-31225
Entity Registrant Name	ENPRO INDUSTRIES, INC
Entity Central Index Key	0001164863
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Incorporation, State or Country Code	NC
Entity Tax Identification Number	01-0573945
Entity Address, Address Line One	5605 Carnegie Boulevard
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Charlotte
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	28209
City Area Code	704
Local Phone Number	731-1500
Title of 12(b) Security	Common stock, $0.01 par value
Trading Symbol	NPO
Security Exchange Name	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		20,593,475