Schedule of fair value of financial assets and financial liabilities (Details) - SEK (kr) kr in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|---|
| IfrsStatementLineItems [Line Items] | |||
| Financial liabilities | kr 2,306,914 | kr 132,984 | kr 1,432 |
| Embedded derivatives [member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Financial liabilities | 4,603 | ||
| Warrants [member] | |||
| IfrsStatementLineItems [Line Items] | |||
| Financial liabilities | kr 128,381 | kr 1,432 |