Statement Of Changes In Equity [Abstract]

Boreo Oyj - Filing #2194086

Concept	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-01-01	As at 2021-01-01	As at 2021-01-01	As at 2021-01-01	As at 2021-01-01	As at 2021-01-01	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	169,000,000.0 EUR	20,000,000.0 EUR	—	214,000,000.0 EUR	—	10,000,000.0 EUR	0.0 EUR	25,000,000.0 EUR	—	—	1,000,000.0 EUR	25,000,000.0 EUR	166,000,000 EUR	132,000,000.0 EUR	0.0 EUR	10,000,000.0 EUR	—	132,000,000.0 EUR	10,000,000.0 EUR	25,000,000.0 EUR	—	1,000,000.0 EUR	0.0 EUR	—	156,000,000.0 EUR	—	—	126,000,000.0 EUR	0.0 EUR	162,000,000 EUR	25,000,000.0 EUR	10,000,000.0 EUR	1,000,000.0 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	3,000,000.0 EUR	—	—	—	—	—	—	—	—	55,000,000.0 EUR	52,000,000.0 EUR	—	—	—	—	—	—	27,000,000.0 EUR	—	—	—	23,000,000.0 EUR	—	—	—	—	4,000,000.0 EUR	—	—	—	—	—	—	—
Issue of equity	—	—	—	20,000,000.0 EUR	—	1,000,000.0 EUR	—	—	—	20,000,000 EUR	—	—	—	—	—	—	—	0 EUR	—	—	—	—	—	—	0.0 EUR	—	—	0.0 EUR	—	—	—	—	—	—
Dividends recognised as distributions to owners	2,000,000.0 EUR	—	—	—	—	—	—	—	—	12,000,000 EUR	10,000,000.0 EUR	—	—	—	—	—	—	2,000,000 EUR	—	—	—	0.0 EUR	—	—	—	—	2,000,000.0 EUR	—	—	—	—	—	—	—