Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands											1 Months Ended	12 Months Ended
	Feb. 16, 2024	Feb. 15, 2024	Jul. 31, 2023	May 18, 2023	Apr. 10, 2023	Mar. 20, 2023	Mar. 14, 2023	Sep. 08, 2022	May 18, 2022	Mar. 01, 2022	Jul. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Feb. 22, 2024	Sep. 14, 2023	Dec. 31, 2021	Jul. 14, 2021
Stockholders Equity Details [Line Items]
Common stock, shares authorized												730,000,000	730,000,000				110,000,000
Common stock, par value (in Dollars per share)												$ 0.0001	$ 0.0001
Common stock, voting Rights												common stock are entitled to one vote per share
Preferred stock, shares authorized												10,000,000	10,000,000
Preferred stock, shares issued												0	0
Preferred stock, shares outstanding												0	0
Warrants to purchase aggregate shares			892,856								892,856
Proceeds from the exercise of warrants			$ 3,000		$ 6,000
Warrant term			5 years		5 years
Debt instrument payment			$ 2,740		$ 5,505
Class of warrant or right, outstanding												7,070,627
Proceeds from PIPE financings												$ 12,750	$ 30,000
Exercise price					$ 7.5
Fair value of the warrant liability			2,645		$ 4,280						$ 2,645	4,359	3,598			$ 25,962
Reduced exercise price											$ 3.5
Additional warrant liability					$ 1,389
Warrant liabilities			$ 511								$ 511	4,359	$ 3,598
Purchase price of per share			$ 3.5		$ 6.5	$ 83.43					$ 3.5
Fair value of modified warrant, incremental expense												$ 402
Amended Employment Agreement | Chief Administrative Officer | Subsequent Event
Stockholders Equity Details [Line Items]
Base salary	$ 425	$ 500
ATM Agreement
Stockholders Equity Details [Line Items]
Sales agents commission rate												3.00%
Gross Proceeds From Issuance Of Common Stock												$ 141
Net proceeds from sale of common stock												$ 136
May 2022 PIPE Warrants
Stockholders Equity Details [Line Items]
Class of warrant or right, outstanding			405,405								405,405	405,405
Exercise price												$ 3.5
Warrants and rights outstanding, expire date												Oct. 10, 2028
Reduced exercise price					$ 7.5						$ 3.5
Amended termination date description					date to five and one-half years following the closing of the offering
May 2022 PIPE Warrants | Private Placement
Stockholders Equity Details [Line Items]
Proceeds from PIPE financings									$ 30,000
Net related cost									27,396
Reduction to additional paid in capital									(2,604)
Proceeds from issuance of private placement in additional paid in capital, net									$ 7,651
Exercise price									$ 82.5
Warrants and rights outstanding, expire date									May 20, 2027
Term (years)									5 years
Warrants and rights issued closing date									May 20, 2022
Fair value of the warrant liability									$ 19,745
April 2023 Registered Direct Warrants (Modified)
Stockholders Equity Details [Line Items]
Class of warrant or right, outstanding			487,451								487,451	487,451
Exercise price												$ 3.5
Warrants and rights outstanding, expire date												Oct. 10, 2028
March 2023 PIPE Warrants
Stockholders Equity Details [Line Items]
Class of warrant or right, outstanding												208,485
Proceeds from PIPE financings						$ 9,000
Exercise price												$ 30
Warrants and rights outstanding, expire date												Mar. 27, 2028
Term (years)												5 years
Reduced exercise price							$ 10
Adjusted advance notice period						61 days
Premium paid for private placement purchase						$ 1,650
March 2023 PIPE Warrants | Private Placement | Chairman and Chief Executive Officer
Stockholders Equity Details [Line Items]
Proceeds from PIPE financings						$ 2,000
May 2023 PIPE Warrants
Stockholders Equity Details [Line Items]
Class of warrant or right, outstanding												581,394
Proceeds from PIPE financings				$ 3,750
Exercise price				$ 10								$ 10
Warrants and rights outstanding, expire date				May 18, 2028								May 17, 2028
Term (years)				5 years
Adjusted advance notice period				61 days
Legacy Celularity
Stockholders Equity Details [Line Items]
Warrants to purchase aggregate shares										1,328,138
Minimum
Stockholders Equity Details [Line Items]
Exercise price			$ 3.5								$ 3.5
Minimum | Legacy Celularity
Stockholders Equity Details [Line Items]
Exercise price										$ 35
Minimum | Legacy Celularity | Preferred Stock
Stockholders Equity Details [Line Items]
Percentage of shares required for voting												50.00%
Maximum
Stockholders Equity Details [Line Items]
Exercise price			$ 7.5								$ 7.5
Maximum | Legacy Celularity
Stockholders Equity Details [Line Items]
Exercise price										$ 75.3
Common Stock | ATM Agreement
Stockholders Equity Details [Line Items]
Aggregate Offering Price								$ 150,000
Purchase and sale of shares												13,296
Average price per share												$ 10.6
Class A Common Stock
Stockholders Equity Details [Line Items]
Common stock, shares authorized												730,000,000	730,000,000
Common stock, par value (in Dollars per share)												$ 0.0001	$ 0.0001
Purchase and sale of shares			857,142		923,076
Warrants to purchase aggregate shares			857,142		923,076						857,142	7,070,627
Class A Common Stock | Subsequent Event
Stockholders Equity Details [Line Items]
Common stock, par value (in Dollars per share)														$ 0.0001
Class A Common Stock | May 2022 PIPE Warrants
Stockholders Equity Details [Line Items]
Purchase price of per share									$ 82.5
Class A Common Stock | May 2022 PIPE Warrants | Private Placement
Stockholders Equity Details [Line Items]
Purchase and sale of shares									405,405
Warrants to purchase aggregate shares									405,405
Purchase price of per share									$ 74
Class A Common Stock | May 2022 PIPE Warrants (Modified)
Stockholders Equity Details [Line Items]
Warrants to purchase aggregate shares			892,857								892,857
Class A Common Stock | March 2023 PIPE Warrants
Stockholders Equity Details [Line Items]
Purchase and sale of shares						938,183
Warrants to purchase aggregate shares															729,698
Purchase price of per share															$ 30
Class A Common Stock | March 2023 PIPE Warrants | Private Placement
Stockholders Equity Details [Line Items]
Purchase price of per share						$ 1.25
Class A Common Stock | May 2023 PIPE Warrants
Stockholders Equity Details [Line Items]
Purchase and sale of shares				581,394
Purchase price of per share				$ 5.2
Class A Common Stock | May 2023 PIPE Warrants | Private Placement
Stockholders Equity Details [Line Items]
Purchase price of per share				$ 1.25
Class A Common Stock | Legacy Celularity
Stockholders Equity Details [Line Items]
Proceeds from the exercise of warrants										$ 46,485
Class A Common Stock | Maximum | March 2023 PIPE Warrants | Private Placement
Stockholders Equity Details [Line Items]
Warrants to purchase aggregate shares						938,183
Class A Common Stock | Maximum | May 2023 PIPE Warrants | Private Placement
Stockholders Equity Details [Line Items]
Warrants to purchase aggregate shares				581,394