Document and Entity Information - USD ($)	4 Months Ended
	Dec. 31, 2019	Mar. 27, 2020	Jun. 30, 2019
Document And Entity Information
Entity Registrant Name	Greenrose Acquisition Corp.
Entity Central Index Key	0001790665
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2019
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	No
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity File Number	001-39217
Entity Shell Company	true
Entity Interactive Data Current	No
Entity Incorporation State Country Code	DE
Entity Public Float			$ 0
Entity Common Stock, Shares Outstanding		21,892,500