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Capital Structure, Financial Risk and Related Items - Valuation Assumptions for Warrants Granted (Details) - DKK (kr) kr / shares in Units, kr in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Results of the year [Line Items] |  |  |
Fair value per warrant on grant date | kr 664.08 | kr 701.82 | kr 631.51
Share price | 2,244.22 | 2,282.35 | 2,009.79
Exercise price | kr 2,244.22 | kr 2,282.35 | kr 2,009.79
Expected dividend yield | 0.00% | 0.00% | 0.00%
Expected stock price volatility | 33.50% | 36.60% | 37.00%
Risk-free interest rate | 0.15% | (0.54%) | (0.58%)
Expected life of warrants | 5 years | 5 years | 5 years
Fair value of warrants granted | kr 172 | kr 124 | kr 75
Fair value of RSU granted (in dollars per share) | kr 2,250.18 | kr 2,236.44 | kr 1,927.83
Total tax expense (income) | kr 1,513 | kr 975 | kr 1,146
Current tax benefit recorded directly in shareholders' equity | 22 | 31 | 44
RSU |  |  |
Results of the year [Line Items] |  |  |
Fair value of RSU granted | kr 612 | kr 416 | kr 90

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