Corporate Information And Statement Of Ifrs Compliance [Abstract]
| Concept |
2024-01-01 to 2024-12-31 |
As at 2024-12-31 |
2023-01-01 to 2023-12-31 |
As at 2023-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|
| Corporate information and statement of IFRS compliance [abstract] | |||||
| Domicile of entity |
Finland
|
— | — | — | — |
| Legal form of entity |
public limited liability company
|
— | — | — | — |
| Country of incorporation |
Finland
|
— | — | — | — |
| Principal place of business |
Espoo,
|
— | — | — | — |
| Description of nature of entity's operations and principal activities |
Fortum is a Nordic energy company. Our
|
— | — | — | — |
| Name of parent entity |
Fortum Corporation
|
— | — | — | — |
| Statement of IFRS compliance [text block] |
|
— | — | — | — |
| Disclosure of reclassifications or changes in presentation [text block] |
|
— | — | — | — |
| Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [text block] | — | — | — | — | — |
| Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [abstract] | |||||
| Disclosure of amounts to be recovered or settled after twelve months for classes of assets and liabilities that contain amounts to be recovered or settled both no more and more than twelve months after reporting date [line items] | |||||
| Current inventories | — |
420,000,000
EUR
|
— |
452,000,000
EUR
|
— |
| Disclosure of material accounting policy information [text block] |
|
— | — | — | — |
| Explanation of sources of estimation uncertainty with significant risk of causing material adjustment |
|
— | — | — | — |
| Disclosure of objectives, policies and processes for managing capital [text block] |
|
— | — | — | — |
| Dividends recognised as distributions to owners per share | — | — |
1.15
|
— |
0.91
|
| Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners |
1,256,000,000
EUR
|
— | — | — | — |
| Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share |
1.40
|
— | — | — | — |