Statement Of Changes In Equity [Abstract]

H. Lundbeck A - Filing #5889908

Concept	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Decrease (increase) through tax on share-based payment transactions, equity	- DKK	8,000,000 DKK	- DKK	- DKK	8,000,000 DKK	- DKK	1,000,000 DKK	- DKK	1,000,000 DKK	- DKK
Increase (decrease) through transactions with owners, equity	- DKK	687,000,000 DKK	- DKK	- DKK	687,000,000 DKK	- DKK	582,000,000 DKK	- DKK	582,000,000 DKK	- DKK
Purchase of treasury shares	- DKK	46,000,000 DKK	- DKK	- DKK	46,000,000 DKK	- DKK	43,000,000 DKK	- DKK	43,000,000 DKK	- DKK