Capital structure and financial items - Financial risks - Derecognised receivables (Details) - Later than one year - Receivables - DKK (kr) kr in Millions	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
US
Disclosure of continuing involvement in derecognised financial assets [line items]
Derecognised receivables without recourse	kr 1,817	kr 3,672	kr 3,587
JAPAN
Disclosure of continuing involvement in derecognised financial assets [line items]
Derecognised receivables without recourse	kr 2,351	kr 2,149	kr 1,937

The amount of assets recognised in the statement of financial position representing the entity's continuing involvement in derecognised financial assets.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 42E
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_42E_a&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_RecognisedAssetsRepresentingContinuingInvolvementInDerecognisedFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant