Statement Of Changes In Equity [Abstract]

Jyske Bank - Filing #1419409

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through transfer between revaluation surplus and retained earnings, equity	0 DKK	0 DKK	0 DKK	34,000,000 DKK	0 DKK	0 DKK	34,000,000 DKK	1,000,000 DKK	0 DKK	0 DKK	0 DKK	0 DKK	0 DKK	1,000,000 DKK
Increase (decrease) through transactions with owners, equity	128,000,000 DKK	0 DKK	0 DKK	0 DKK	1,428,000 DKK	1,556,000 DKK	1,428,000 DKK	508,000,000 DKK	50,000,000 DKK	676,000,000 DKK	0 DKK	118,000,000 DKK	558,000,000 DKK	0 DKK
Purchase of treasury shares	0 DKK	0 DKK	0 DKK	0 DKK	2,991,000 DKK	2,991,000 DKK	2,991,000 DKK	1,889,000 DKK	0 DKK	1,889,000 DKK	0 DKK	0 DKK	1,889,000 DKK	0 DKK
Sale or issue of treasury shares	0 DKK	0 DKK	0 DKK	0 DKK	1,556,000 DKK	1,556,000 DKK	1,556,000 DKK	1,381,000 DKK	0 DKK	1,381,000 DKK	0 DKK	0 DKK	1,381,000 DKK	0 DKK
Reduction of issued capital	—	—	—	—	—	—	—	50,000,000 DKK	50,000,000 DKK	0 DKK	0 DKK	0 DKK	0 DKK	0 DKK