Statement Of Financial Position [Abstract]

Fortum Oyj - Filing #2176628

Concept	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31
Statement of financial position [abstract]
Assets [abstract]
Property, plant and equipment	7 266 EUR	—	—	—	—	—	—	—	—	—	19 049 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Investments accounted for using equity method	1 249 EUR	—	—	—	—	—	—	—	—	—	2 461 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Deferred tax assets	933,000,000 EUR	—	—	—	—	—	—	—	—	—	2 149 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	3 919 EUR	—	—	—	—	—	—	—	—	—	7 592 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	2 308 EUR
Assets	23 642 EUR	—	—	—	—	—	—	—	—	—	149 661 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	3 046 EUR	—	—	—	—	—	—	—	—	—	3 046 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Retained earnings	6 467 EUR	—	—	—	—	—	—	—	—	—	10 062 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Share premium	73,000,000 EUR	—	—	—	—	—	—	—	—	—	73,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other equity interest	1 916 EUR	—	—	—	—	—	—	—	—	—	1 050 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity attributable to owners of parent	7 670 EUR	—	—	—	—	—	—	—	—	—	12 131 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Non-controlling interests	67,000,000 EUR	—	—	—	—	—	—	—	—	—	1 534 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity	7 737 EUR	93,000,000 EUR	9 499 EUR	172,000,000 EUR	73,000,000 EUR	67,000,000 EUR	3 046 EUR	3 031 EUR	7 670 EUR	2 182 EUR	13 665 EUR	1 138 EUR	12 830 EUR	54,000,000 EUR	34,000,000 EUR	12 131 EUR	73,000,000 EUR	1 534 EUR	2 768 EUR	3 046 EUR	2 624 EUR	158,000,000 EUR	12 953 EUR	3 046 EUR	175,000,000 EUR	13 097 EUR	18,000,000 EUR	2 948 EUR	73,000,000 EUR	15 577 EUR
Liabilities [abstract]
Deferred tax liabilities	152,000,000 EUR	—	—	—	—	—	—	—	—	—	827,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Liabilities	15 905 EUR	—	—	—	—	—	—	—	—	—	135 997 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Equity and liabilities	23 642 EUR	—	—	—	—	—	—	—	—	—	149 661 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—