Document and Entity Information - USD ($)	12 Months Ended
	Jan. 31, 2020	Mar. 20, 2020	Jul. 31, 2019
Document and Entity Information [Abstract]
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Jan. 31, 2020
Entity Central Index Key	0000082166
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity File Number	001-07982
Current Fiscal Year End Date	--01-31
Entity Registrant Name	RAVEN INDUSTRIES, INC.
Entity Filer Category	Large Accelerated Filer
Entity Incorporation, State or Country Code	SD
Entity Tax Identification Number	46-0246171
Entity Address, Address Line One	205 E. 6th Street, P.O. Box 5107
Entity Address, City or Town	Sioux Falls,
Entity Address, State or Province	SD
Entity Address, Postal Zip Code	57117-5107
City Area Code	605
Local Phone Number	336-2750
Title of 12(b) Security	Common Stock, $1 par value
Trading Symbol	RAVN
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Amendment Flag	false
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 1,285,578,775
Company's Nasdaq share price per share			$ 36.24
Entity Common Stock, Shares Outstanding		35,780,238