Cover - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2020	Feb. 29, 2020	Jul. 31, 2019
Class of Stock [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jan. 31, 2020
Document Transition Report	false
Entity File Number	001-38933
Entity Registrant Name	CROWDSTRIKE HOLDINGS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-3788918
Entity Address, Address Line One	150 Mathilda Place
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Sunnyvale
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94086
City Area Code	888
Local Phone Number	512-8906
Title of 12(b) Security	Class A common stock, par value $0.0005 per share
Trading Symbol	CRWD
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Public Float			$ 6,150
Entity Central Index Key	0001535527
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Class A Common Stock
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		114,945,286
Class B Common Stock
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		98,267,729