XML 72 R60.htm IDEA: XBRL DOCUMENT v3.24.2.u1

Leases - Narrative (Details) ft² in Thousands	1 Months Ended
	Sep. 30, 2021 ft² numberOfExtensionPeriod	Jun. 30, 2024 ft² numberOfBuilding campus numberOfExtensionPeriod
Lessee, Lease, Description [Line Items]
Number of campuses | campus		2
MTC South, MTC North and MTC East
Lessee, Lease, Description [Line Items]
Area of office space (in sqft) | ft²		686
Number of extension | numberOfExtensionPeriod		3
Extension term		5 years
Finance lease, number of properties | numberOfBuilding		3
Cambridge leases
Lessee, Lease, Description [Line Items]
Area of office space (in sqft) | ft²	462	667
Number of years	2 years
Lease term	15 years
Number of extension | numberOfExtensionPeriod	2
Extension term	7 years

X

- Definition

Finance Lease, Number Of Properties

+ References

No definition available.

+ Details

Name:	mrna_FinanceLeaseNumberOfProperties
Namespace Prefix:	mrna_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Lessee, Operating Lease, Building Project, Years

+ References

No definition available.

+ Details

Name:	mrna_LesseeOperatingLeaseBuildingProjectYears
Namespace Prefix:	mrna_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee, Operating Lease, Number Of Extension

+ References

No definition available.

+ Details

Name:	mrna_LesseeOperatingLeaseNumberOfExtensions
Namespace Prefix:	mrna_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Operating Lease, Number Of Properties

+ References

No definition available.

+ Details

Name:	mrna_OperatingLeaseNumberOfProperties
Namespace Prefix:	mrna_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

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

X

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

Name:	us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=mrna_MTCSouthMTCNorthAndMTCEastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=mrna_CambridgeMassachusettsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: