Statement Of Changes In Equity [Abstract]

WithSecure Oyj - Filing #2161681

Concept	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	2022-01-01 to 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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	102 980 EUR	20 222 EUR	—	—	80,000 EUR	805,000 EUR	155,000 EUR	83 638 EUR	140 089 EUR	—	—	—	58 649 EUR	155,000 EUR	80,000 EUR	2 124 EUR	—	83 638 EUR	—	849,000 EUR	87 831 EUR	95 363 EUR	6 789 EUR	165,000 EUR	124,000 EUR	1 551 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	40 030 EUR	—	—	40 030 EUR	—	—	—	—	—	—	—	430 316 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	38 712 EUR	—	—	40 030 EUR	1 319 EUR	—	—	—	—	—	—	428 316 EUR	430 316 EUR	—	—	—	—	—	—	2 000 EUR	—	—	—	—	—	—	—
Issue of equity	—	—	—	—	—	—	—	—	—	—	—	75 988 EUR	—	—	—	—	—	75 988 EUR	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	—	—	—	—	—	—	—	—	—	20,000 EUR	20,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	1 603 EUR	—	—	1 603 EUR	—	—	—	—	—	—	694,000 EUR	3 410 EUR	1 854 EUR	—	—	—	—	861,000 EUR	—	—	—	—	—	—	—	—	—