Statement Of Comprehensive Income [Abstract]

Elisa Oyj - Filing #2196757

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	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 comprehensive income [abstract]
Profit (loss)	200,000 EUR	—	343,600,000 EUR	343,500,000 EUR	343,600,000 EUR	328,000,000 EUR	328,100,000 EUR	100,000 EUR	328,000,000 EUR	—
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract]
Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans	—	2,800,000 EUR	2,800,000 EUR	2,800,000 EUR	—	—	4,500,000 EUR	—	4,500,000 EUR	4,500,000 EUR
Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]
Exchange differences on translation [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations	100,000 EUR	—	1,200,000 EUR	1,200,000 EUR	1,200,000 EUR	3,200,000 EUR	3,100,000 EUR	100,000 EUR	3,200,000 EUR	—
Cash flow hedges [abstract]
Other comprehensive income, net of tax, cash flow hedges	—	900,000 EUR	900,000 EUR	900,000 EUR	—	—	400,000 EUR	—	400,000 EUR	400,000 EUR
Other comprehensive income	100,000 EUR	1,900,000 EUR	3,100,000 EUR	3,000,000 EUR	1,200,000 EUR	3,200,000 EUR	8,000,000 EUR	100,000 EUR	8,100,000 EUR	4,900,000 EUR
Comprehensive income	100,000 EUR	1,900,000 EUR	340,600,000 EUR	340,400,000 EUR	342,400,000 EUR	331,200,000 EUR	336,100,000 EUR	0 EUR	336,100,000 EUR	4,900,000 EUR
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	340,500,000 EUR	—	—	336,100,000 EUR	—	—	—
Comprehensive income, attributable to non-controlling interests	—	—	—	100,000 EUR	—	—	0 EUR	—	—	—