Cover - $ / shares	6 Months Ended
	Jun. 30, 2025	Aug. 29, 2025
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2025
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2025
Current Fiscal Year End Date	--12-31
Entity File Number	001-38914
Entity Registrant Name	Celularity Inc.
Entity Central Index Key	0001752828
Entity Tax Identification Number	83-1702591
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	170 Park Ave
Entity Address, City or Town	Florham Park
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07932
City Area Code	(908)
Local Phone Number	768-2170
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
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		26,691,477
Entity Listing, Par Value Per Share	$ 0.0001
Class A Common Stock, par value $0.0001 per share
Title of 12(b) Security	Class A Common Stock, par value $0.0001 per share
Trading Symbol	CELU
Security Exchange Name	NASDAQ
Warrants, each exercisable for one share of Class A Common Stock at an exercise price of $115 per share
Title of 12(b) Security	Warrants, each exercisable for one share of Class A Common Stock at an exercise price of $115 per share
Trading Symbol	CELUW
Security Exchange Name	NASDAQ