Cover Page - shares	3 Months Ended
	Apr. 30, 2026	Jun. 04, 2026
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Apr. 30, 2026
Document Transition Report	false
Entity File Number	001-42922
Registrant Name	NAVAN, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-3424780
Entity Address, Address Line One	3045 Park Boulevard
Entity Address, City or Town	Palo Alto
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94306
City Area Code	888
Local Phone Number	505-8747
Title of 12(b) Security	Class A Common Stock, par value $0.00000625 per share
Trading Symbol	NAVN
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Amendment Flag	false
Document Fiscal Year Focus	2027
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001639723
Current Fiscal Year End Date	--01-31
Class A common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		239,026,566
Class B common stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		15,304,696