Cover Page - shares	9 Months Ended
	Sep. 30, 2024	Oct. 31, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity File Number	001-38791
Entity Registrant Name	Luminar Technologies, Inc./DE
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	83-1804317
Entity Address, Address Line One	2603 Discovery Drive
Entity Address, Address Line Two	Suite 100
Entity Address, City or Town	Orlando
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	32826
City Area Code	800
Local Phone Number	532-2417
Title of 12(b) Security	Class A common stock, par value of $0.0001 per share
Trading Symbol	LAZR
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001758057
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		402,353,009
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		97,088,670