Disclosure Of Fair Value Measurement [Text Block]

Boreo Oyj - Filing #2194086

Concept	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 2021-01-01	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	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 2020-01-01	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
Disclosure of fair value measurement [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of assets [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of assets [abstract]
Disclosure of fair value measurement of assets [line items]
Assets	—	—	974,000,000.0 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	650,000,000.0 EUR	—	—	—	—	—	—
Reconciliation of changes in fair value measurement, assets [abstract]
Disclosure of fair value measurement of equity [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of equity [abstract]
Disclosure of fair value measurement of 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	25,000,000.0 EUR	0.0 EUR	126,000,000.0 EUR	162,000,000 EUR	10,000,000.0 EUR	1,000,000.0 EUR
Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract]