Class of warrant or righst expiration date.

No definition available.

Name:	celu_ClassOfWarrantOrRighstExpirationDate
Namespace Prefix:	celu_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of warrants repriced.

+ References

No definition available.

+ Details

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

- Definition

Stockholders’ Equity (Details) [Line Items]

+ References

No definition available.

+ Details

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

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ 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_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
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

+ Details

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

- Definition

Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in YYYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=celu_CVStarrCoIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=celu_TwoThousandTwentyFourWarrantRepricingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_TypeOfArrangementAxis=celu_RwiForbearanceAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_TypeOfArrangementAxis=celu_ForbearanceAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=celu_JuneTwoThousandTwentyThreeLoanWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
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:

Equity - Warrants - Additional Information (Details) - $ / shares	Mar. 13, 2024	Jan. 12, 2024	Jun. 30, 2024	Mar. 12, 2024	Apr. 10, 2023
Stockholders Equity Details [Line Items]
Exercise price	$ 8.1				$ 7.5
CV Starr
Stockholders Equity Details [Line Items]
Number of warrants repriced	50,000
Exercise price	$ 5.895
2024 Warrant Repricing
Stockholders Equity Details [Line Items]
Warrant Expiration Date		Mar. 16, 2025
Number of warrants repriced		652,981
Exercise price		$ 2.4898
Common Stock \| RWI Forbearance Agreement \| Warrants
Stockholders Equity Details [Line Items]
Exercise price	$ 5.895
Warrants and rights outstanding, expire date	Jun. 20, 2028
Common Stock \| Forbearance Agreement \| March 2023 Loan Warrants \| Warrants \| Loan Agreement \| CV Starr
Stockholders Equity Details [Line Items]
Warrants to purchase aggregate shares	75,000
Warrant Expiration Date	Mar. 17, 2028
Exercise price	$ 5.895			$ 7.1
Common Stock \| Forbearance Agreement \| June 2023 Loan Warrants \| Warrants \| Loan Agreement \| CV Starr
Stockholders Equity Details [Line Items]
Warrants to purchase aggregate shares	50,000
Warrant Expiration Date	Jun. 20, 2028
Exercise price	$ 5.895			$ 8.1
Maximum \| Common Stock \| RWI Forbearance Agreement \| Warrants
Stockholders Equity Details [Line Items]
Number of warrants repriced	300,000
Class A Common Stock
Stockholders Equity Details [Line Items]
Warrants to purchase aggregate shares					923,076
Class A Common Stock \| 2024 Warrant Repricing
Stockholders Equity Details [Line Items]
Exercise price		$ 67.7	$ 67.7