Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Apr. 12, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Document Transition Report	false
Entity File Number	1-11460
Entity Registrant Name	Brooklyn ImmunoTherapeutics, Inc.
Entity Central Index Key	0000748592
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	31-1103425
Entity Address, Address Line One	10355 Science Center Drive, Suite 150,
Entity Address, City or Town	San Diego
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92121
City Area Code	212
Local Phone Number	582-1199
Title of 12(b) Security	Common Stock, $0.005 par value
Trading Symbol	BTX
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	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 694
Entity Common Stock, Shares Outstanding		57,451,937
Auditor Name	Marcum LLP
Auditor Firm ID	688
Auditor Location	New York, NY