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v3.22.2

Subsequent Events (Details) segment in Millions, $ in Millions | Jul. 31, 2022 USD ($) dose segment | Jun. 30, 2022 dose
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U.S. government partnership (“OWS”) |  |
Subsequent events |  |
Purchase agreement, number of vaccine doses |  | 3,000,000
European Commissions ("EC") |  |
Subsequent events |  |
Purchase agreement, number of vaccine doses |  | 70,000,000
Number of doses to be distributed |  | 100,000,000
Additional purchase option, number of doses |  | 100,000,000
Minimum | European Commissions ("EC") |  |
Subsequent events |  |
Number of doses to be distributed |  | 20,000,000
Maximum | European Commissions ("EC") |  |
Subsequent events |  |
Number of doses to be distributed |  | 200,000,000
Subsequent Events | Amended and Restated UK Supply Agreement |  |
Subsequent events |  |
Purchase agreement, number of vaccine doses | 60,000,000 |
Subsequent Events | U.S. government partnership (“OWS”) |  |
Subsequent events |  |
Purchase agreement, number of vaccine doses | 3,000,000 |
Number of doses to be distributed | 200,000 |
Additional purchase option, number of doses | segment | 9.8 |
Subsequent Events | Joint Committee on Vaccination and Immunization (JCVI) |  |
Subsequent events |  |
Number of doses to be distributed | 44,000,000 |
Collaboration agreement upfront payment amount | $ | $ 225.0 |
Subsequent Events | European Commissions ("EC") |  |
Subsequent events |  |
Purchase agreement, number of vaccine doses | 65,000,000 |
Number of doses, cancelled | 5,000,000 |
Subsequent Events | Minimum | Amended and Restated UK Supply Agreement |  |
Subsequent events |  |
Number of doses to be distributed | 1,000,000 |
Subsequent Events | Maximum | Amended and Restated UK Supply Agreement |  |
Subsequent events |  |
Number of doses to be distributed | 15,000,000 |
Subsequent Events | Maximum | U.S. government partnership (“OWS”) |  |
Subsequent events |  |
Number of doses to be distributed | 100,000,000 |

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- Definition Collaboration Agreement Upfront Payment Amount + References No definition available. + Details
Name: | nvax_CollaborationAgreementUpfrontPaymentAmount
Namespace Prefix: | nvax_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Purchase Agreement, Number of Doses, Cancelled + References No definition available. + Details
Name: | nvax_PurchaseAgreementNumberOfDosesCancelled
Namespace Prefix: | nvax_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Purchase Agreement, Number Of Doses Of Vaccine Candidate, Additional Purchase Option + References No definition available. + Details
Name: | nvax_PurchaseAgreementNumberOfDosesOfVaccineCandidateAdditionalPurchaseOption
Namespace Prefix: | nvax_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Purchase Agreement, Number of Doses, To Be Distributed + References No definition available. + Details
Name: | nvax_PurchaseAgreementNumberOfDosesToBeDistributed
Namespace Prefix: | nvax_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Purchase Agreement, Number Of Vaccine Doses + References No definition available. + Details
Name: | nvax_PurchaseAgreementNumberOfVaccineDoses
Namespace Prefix: | nvax_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_TypeOfArrangementAxis=nvax_USGovernmentPartnershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_TypeOfArrangementAxis=nvax_EuropeanCommissionsECMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SupplyCommitmentAxis=nvax_AmendedAndRestatedUKSupplyAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_TypeOfArrangementAxis=nvax_JointCommitteeOnVaccinationAndImmunizationJCVIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |