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Capital Structure, Financial Risk and Related Items - Assets and Liabilities in Foreign Currency (Details) - DKK (kr) kr in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure of credit risk exposure [line items] |  |
Central rate committed to maintain | 7.46 |
Positive fluctuation in exchange rate | 2.25% |
Negative fluctuation in exchange rate | (2.25%) |
Euro Member Countries, Euro |  |
Disclosure of credit risk exposure [line items] |  |
Percentage change in exchange rate | 1.00% | 1.00%
Impact of change in exchange rate | kr 9 | kr 8
United States of America, Dollars |  |
Disclosure of credit risk exposure [line items] |  |
Percentage change in exchange rate | 10.00% | 10.00%
Impact of change in exchange rate | kr 1,487 | kr 1,480
United Kingdom, Pounds |  |
Disclosure of credit risk exposure [line items] |  |
Percentage change in exchange rate | 10.00% | 10.00%
Impact of change in exchange rate | kr (2) | kr 1

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