v3.26.1
Other Payables - Narrative (Details)
$ in Millions
6 Months Ended
Jun. 30, 2026
USD ($)
Trade and other payables [abstract]
Increase (decrease) in other payables
$ (262)
X
- Definition
Increase (Decrease) in Other Payables
+ References
No definition available.
+ Details
Name:
gmab_IncreaseDecreaseInOtherPayables
Namespace Prefix:
gmab_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
ifrs-full_TradeAndOtherPayablesAbstract
Namespace Prefix:
ifrs-full_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration