XML 27 R1.htm IDEA: XBRL DOCUMENT
v3.21.2

Document and Entity Information | 6 Months Ended
--- | ---
Jun. 30, 2021
Document Information [Line Items] |
Document Type | 6-K
Document Period End Date | Jun. 30, 2021
Entity Registrant Name | Genmab A/S
Entity Central Index Key | 0001434265
Current Fiscal Year End Date | --12-31
Document Fiscal Year Focus | 2021
Document Fiscal Period Focus | Q2
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