XML 48 R38.htm IDEA: XBRL DOCUMENT
v3.21.1

License and Collaboration Agreements - License, Collaboration and Other Revenue (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
License And Collaboration Agreements [Line Items] |  |
License, collaboration and other revenue | $ 54 | $ 27,515
Bristol-Myers Squibb Company | Bempegaldesleukin |  |
License And Collaboration Agreements [Line Items] |  |
License, collaboration and other revenue | 0 | 25,000
Eli Lilly and Company | NKTR-358 |  |
License And Collaboration Agreements [Line Items] |  |
License, collaboration and other revenue | 0 | 1,259
Other |  |
License And Collaboration Agreements [Line Items] |  |
License, collaboration and other revenue | $ 54 | $ 1,256

X
- Definition License and collaboration agreements. + References No definition available. + Details
Name: | nktr_LicenseAndCollaborationAgreementsLineItems
Namespace Prefix: | nktr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Revenue may contain one or more of the following elements: upfront fees, contract research, milestone payments, manufacturing and supply, royalties, and license fees. + References No definition available. + Details
Name: | nktr_LicenseCollaborationOtherRevenue
Namespace Prefix: | nktr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=nktr_BristolMyersSquibbCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | dei_LegalEntityAxis=nktr_EliLillyAndCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | dei_LegalEntityAxis=nktr_OtherPartnerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |