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Financial Instruments - Financial Risk (Details) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2022 | Dec. 31, 2021
Credit risk | Triple A-rating from Moody's, S&P or Fitch |  |
Disclosure of credit risk exposure [line items] |  |
Percentage of marketable securities | 71.00% | 68.00%
Currency risk |  |
Disclosure of credit risk exposure [line items] |  |
Marketable securities were invested (as a percent) | 100.00% | 100.00%
Currency risk | United States of America, Dollars |  |
Disclosure of credit risk exposure [line items] |  |
Marketable securities were invested (as a percent) | 79.00% | 75.00%
Currency risk | DKK |  |
Disclosure of credit risk exposure [line items] |  |
Marketable securities were invested (as a percent) | 13.00% | 16.00%
Currency risk | Euro Member Countries, Euro |  |
Disclosure of credit risk exposure [line items] |  |
Marketable securities were invested (as a percent) | 7.00% | 8.00%
Currency risk | United Kingdom, Pounds |  |
Disclosure of credit risk exposure [line items] |  |
Marketable securities were invested (as a percent) | 1.00% | 1.00%

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