Statement Of Comprehensive Income [Abstract]

Finnair Oyj - Filing #2161306

Concept	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31
Statement of comprehensive income [abstract]
Profit (loss)	- EUR	- EUR	- EUR	2,543,000,000 EUR	- EUR	2,543,000,000 EUR	- EUR	- EUR	- EUR	4,762,000,000 EUR	- EUR	- EUR	- EUR	- EUR	4,762,000,000 EUR	- 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	- EUR	- EUR	- EUR	93,000,000 EUR	- EUR	- EUR	- EUR	93,000,000 EUR	- EUR	400,000,000 EUR	- EUR	- EUR	400,000,000 EUR	- EUR	- EUR	- EUR
Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]
Cash flow hedges [abstract]
Gains (losses) on cash flow hedges, net of tax	- EUR	- EUR	- EUR	35,000,000 EUR	- EUR	- EUR	- EUR	35,000,000 EUR	- EUR	137,000,000 EUR	- EUR	- EUR	137,000,000 EUR	- EUR	- EUR	- EUR
Other comprehensive income	- EUR	- EUR	- EUR	58,000,000 EUR	- EUR	- EUR	- EUR	58,000,000 EUR	- EUR	262,000,000 EUR	- EUR	- EUR	262,000,000 EUR	- EUR	- EUR	- EUR
Comprehensive income	- EUR	- EUR	- EUR	2,600,000,000 EUR	- EUR	2,543,000,000 EUR	- EUR	58,000,000 EUR	- EUR	4,500,000,000 EUR	- EUR	- EUR	262,000,000 EUR	- EUR	4,762,000,000 EUR	- EUR
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	2,600,000,000 EUR	—	—	—	—	—	4,500,000,000 EUR	—	—	—	—	—	—