Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Jun. 29, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Registrant Name	COVIA HOLDINGS CORPORATION
Entity Central Index Key	0001722287
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity File Number	001-38510
Entity Tax Identification Number	13-2656671
Entity Address, Address Line One	3 Summit Park Drive
Entity Address, Address Line Two	Suite 700
Entity Address, City or Town	Independence
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44131
City Area Code	800
Local Phone Number	255-7263
Entity Common Stock Shares Outstanding		158,195,156
Entity Incorporation, State or Country Code	DE
Document Quarterly Report	true
Document Transition Report	false
Title of each class	Common Stock
Trading Symbol(s)	CVIA
Name of each exchange on which registered	NYSE