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Results for the Year - Geographical Areas (Details) kr in Millions | 12 Months Ended
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Dec. 31, 2021 DKK (kr) item | Dec. 31, 2020 DKK (kr) | Dec. 31, 2019 DKK (kr)
Disclosure of geographical areas [line items] |  |  |
Revenue | kr 8,482 | kr 10,111 | kr 5,366
Non-current assets | kr 1,256 | 1,094 | 895
Number of business unit | item | 1 |  |
DENMARK |  |  |
Disclosure of geographical areas [line items] |  |  |
Revenue | kr 8,482 | 10,111 | 5,366
Non-current assets | 269 | 344 | 475
NETHERLANDS |  |  |
Disclosure of geographical areas [line items] |  |  |
Non-current assets | 422 | 380 | 336
UNITED STATES |  |  |
Disclosure of geographical areas [line items] |  |  |
Non-current assets | 470 | kr 370 | kr 84
JAPAN |  |  |
Disclosure of geographical areas [line items] |  |  |
Non-current assets | kr 95 |  |

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