Statement Of Changes In Equity [Abstract]
| Concept |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||
| Equity |
54,000,000
SEK
|
— |
71,000,000
SEK
|
1 978
SEK
|
— |
107,000,000
SEK
|
— |
57,000,000
SEK
|
— |
1 797
SEK
|
1 871
SEK
|
— | — |
50,000,000
SEK
|
2 108
SEK
|
71,000,000
SEK
|
1 930
SEK
|
— |
105,000,000
SEK
|
57,000,000
SEK
|
— |
2 213
SEK
|
— | — |
2 181
SEK
|
71,000,000
SEK
|
2 240
SEK
|
57,000,000
SEK
|
59,000,000
SEK
|
2 031
SEK
|
22,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||
| Profit (loss) | — |
52,000,000
SEK
|
— | — |
40,000,000
SEK
|
— |
52,000,000
SEK
|
— |
12,000,000
SEK
|
— | — | — | — | — | — | — | — |
191,000,000
SEK
|
— | — |
201,000,000
SEK
|
— |
191,000,000
SEK
|
10,000,000
SEK
|
— | — | — | — | — | — | — |
| Other comprehensive income | — |
86,000,000
SEK
|
— | — |
88,000,000
SEK
|
— |
18,000,000
SEK
|
— |
2,000,000
SEK
|
— | — |
104,000,000
SEK
|
28,000,000
SEK
|
— | — | — | — |
44,000,000
SEK
|
— | — |
42,000,000
SEK
|
— |
72,000,000
SEK
|
2,000,000
SEK
|
— | — | — | — | — | — | — |
| Comprehensive income | — |
138,000,000
SEK
|
— | — |
128,000,000
SEK
|
— |
34,000,000
SEK
|
— |
10,000,000
SEK
|
— | — |
104,000,000
SEK
|
28,000,000
SEK
|
— | — | — | — |
147,000,000
SEK
|
— | — |
159,000,000
SEK
|
— |
119,000,000
SEK
|
12,000,000
SEK
|
— | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — |
10 2
SEK
|
— | — |
106,000,000
SEK
|
— |
102,000,000
SEK
|
— |
4,000,000
SEK
|
— | — | — | — | — | — | — | — |
96,000,000
SEK
|
— | — |
99,000,000
SEK
|
— |
96,000,000
SEK
|
3,000,000
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — |
–
SEK
|
— | — |
0
SEK
|
— | — | — |
0
SEK
|
— | — | — | — | — | — | — | — |
–
SEK
|
— | — |
37,000,000
SEK
|
— | — |
37,000,000
SEK
|
— | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — |
11,000,000
SEK
|
— | — |
11,000,000
SEK
|
— |
11,000,000
SEK
|
— | — | — | — | — | — | — | — | — | — |
10,000,000
SEK
|
— | — |
10,000,000
SEK
|
— |
10,000,000
SEK
|
— | — | — | — | — | — | — | — |