Debt instrument, contribution amount.

No definition available.

Name:	celu_DebtInstrumentContributionAmount
Namespace Prefix:	celu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Loan agreement.

+ References

No definition available.

+ Details

Name:	celu_LoanAgreement
Namespace Prefix:	celu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares holding.

+ References

No definition available.

+ Details

Name:	celu_NumberOfSharesHolding
Namespace Prefix:	celu_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Payments to related party.

+ References

No definition available.

+ Details

Name:	celu_PaymentsToRelatedParty
Namespace Prefix:	celu_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Receive For Month

+ References

No definition available.

+ Details

Name:	celu_ReceiveForMonth
Namespace Prefix:	celu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Related Party Cash Bonus

+ References

No definition available.

+ Details

Name:	celu_RelatedPartyCashBonus
Namespace Prefix:	celu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Related Party Transactions (Details) [Line Items]

+ References

No definition available.

+ Details

Name:	celu_RelatedPartyTransactionsDetailsLineItems
Namespace Prefix:	celu_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

+ References

No definition available.

+ Details

Name:	us-gaap_AccruedLiabilitiesAndOtherLiabilities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482925/835-30-45-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-6

+ Details

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfPrivatePlacement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of transactions with related party during the financial reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-3

+ Details

Name:	us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Description of the terms and manner of settlement of the related party transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionTermsAndMannerOfSettlement
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

+ References

No definition available.

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Number of options vested.

+ References

No definition available.

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=celu_LoanAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_TitleOfIndividualAxis=celu_ChairmanAndChiefExecutiveOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=celu_MarchTwoThousandTwentyThreePrivateInvestmentInPublicEquityWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=celu_COTAIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=celu_CryoportSystemsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=celu_SorrentoTherapeuticsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=celu_CVStarLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=celu_MarchTwoThousandTwentyThreeLoanWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=celu_JuneTwoThousandTwentyThreeWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=celu_ResortsWorldIncPteLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=celu_ScientificAndClinicalAdvisorAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=celu_DrAndrewPecoraMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=celu_AmendedAndRestatedEmploymentAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=celu_DrRobertHaririMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=celu_ConsultingAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=celu_AdvisoryAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=celu_RobinLSmithMdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VestingAxis=celu_InitialTrancheMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Related Party Transactions - Additional Information (Details) - USD ($)					3 Months Ended		9 Months Ended
	Mar. 20, 2023	Sep. 21, 2022	Sep. 01, 2022	Aug. 16, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 14, 2023	Aug. 21, 2023	Jul. 31, 2023	Jun. 21, 2023	Apr. 10, 2023	Mar. 17, 2023	Mar. 16, 2023	Dec. 31, 2022
Related Party Transactions Details [Line Items]
Proceeds from PIPE financings							$ 12,750,000	$ 30,000,000
Accrued expenses					$ 10,239,000		10,239,000									$ 9,069,000
Warrants to purchase Class A common stock											8,928,572
Loan Agreement \| Dr. Hariri
Related Party Transactions Details [Line Items]
Debt instrument contribution amount										$ 1,000,000
Loan interest rate										15.00%
March 2023 PIPE Warrants
Related Party Transactions Details [Line Items]
Proceeds from PIPE financings	$ 9,000,000
Class A Common Stock
Related Party Transactions Details [Line Items]
Warrants to purchase Class A common stock											8,571,429		9,230,770
Class A Common Stock \| March 2023 PIPE Warrants
Related Party Transactions Details [Line Items]
Warrants to purchase Class A common stock									7,296,987
COTA, Inc
Related Party Transactions Details [Line Items]
Contribution made							0	86,000
Cryoport Systems, Inc
Related Party Transactions Details [Line Items]
Contribution made							33,000	56,000
Sorrento Therapeutics, Inc
Related Party Transactions Details [Line Items]
Contribution made							$ 0	1,821,000
CV Star Loan
Related Party Transactions Details [Line Items]
Loan agreement														$ 5,000,000
CV Star Loan \| Class A Common Stock
Related Party Transactions Details [Line Items]
Warrants to purchase Class A common stock					1,250,000		1,250,000
Number of shares holding					7,640,693		7,640,693
CV Star Loan \| Class A Common Stock \| March 2023 Loan Warrants
Related Party Transactions Details [Line Items]
Warrants to purchase Class A common stock					750,000		750,000
CV Star Loan \| Class A Common Stock \| June 2023 Warrants
Related Party Transactions Details [Line Items]
Warrants to purchase Class A common stock					500,000		500,000
Resorts World Inc Pte Ltd
Related Party Transactions Details [Line Items]
Loan agreement												$ 12,000,000			$ 12,000,000
Resorts World Inc Pte Ltd \| Class A Common Stock
Related Party Transactions Details [Line Items]
Warrants to purchase Class A common stock					3,000,000		3,000,000
SAB Agreement \| Dr. Andrew Pecora
Related Party Transactions Details [Line Items]
Receive for month			$ 10,000
Amended and Restated Employment Agreement \| Dr. Robert Hariri
Related Party Transactions Details [Line Items]
Accrued expenses					$ 856,000		$ 856,000
Consulting Agreement \| Dr. Andrew Pecora
Related Party Transactions Details [Line Items]
Related party description							On August 31, 2022, Dr. Pecora resigned as the Company’s President, and subsequently entered into a consulting agreement with the Company dated September 21, 2022, to receive a $10 monthly fee for an initial six-month term and will be automatically renewed for one additional six- month term if either party does not provide notice of non-renewal.
Receive for month		$ 10,000
Advisory Agreement \| Robin L. Smith, MD
Related Party Transactions Details [Line Items]
Accrued expenses					160,000		$ 160,000
Vested options to acquire shares				1,050,000
One-time cash bonus				$ 1,500,000
Amount paid					$ 20,000	$ 20,000	$ 20,000	$ 20,000
Receive for month				$ 20,000
Initial Tranche \| Advisory Agreement \| Robin L. Smith, MD
Related Party Transactions Details [Line Items]
Vested options to acquire shares				250,000
Restricted Stock Units
Related Party Transactions Details [Line Items]
Options vesting period							4 years
Restricted Stock Units \| SAB Agreement \| Dr. Andrew Pecora
Related Party Transactions Details [Line Items]
RSUs one-time grant value			$ 125,000
Options vesting period			4 years
Private Placement \| March 2023 PIPE Warrants \| Dr. Hariri
Related Party Transactions Details [Line Items]
Proceeds from PIPE financings	$ 2,000,000