Statement Of Changes In Equity [Abstract]
| Concept |
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 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
As at 2023-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
As at 2022-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Statement of changes in equity [line items] | |||||||||||||||||||||||||||||||
| Equity | — |
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
|
71,000,000
SEK
|
26,000,000
SEK
|
1 915
SEK
|
57,000,000
SEK
|
1 813
SEK
|
1 932
SEK
|
17,000,000
SEK
|
| Changes in equity [abstract] | |||||||||||||||||||||||||||||||
| Comprehensive income [abstract] | |||||||||||||||||||||||||||||||
| Profit (loss) | — | — | — | — | — |
191,000,000
SEK
|
— | — |
201,000,000
SEK
|
— |
191,000,000
SEK
|
10,000,000
SEK
|
207,000,000
SEK
|
— | — | — | — |
7,000,000
SEK
|
207,000,000
SEK
|
— | — | — |
214,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Other comprehensive income |
28,000,000
SEK
|
— | — | — | — |
44,000,000
SEK
|
— | — |
42,000,000
SEK
|
— |
72,000,000
SEK
|
2,000,000
SEK
|
143,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
95,000,000
SEK
|
— | — |
48,000,000
SEK
|
144,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Comprehensive income |
28,000,000
SEK
|
— | — | — | — |
147,000,000
SEK
|
— | — |
159,000,000
SEK
|
— |
119,000,000
SEK
|
12,000,000
SEK
|
350,000,000
SEK
|
— | — | — | — |
8,000,000
SEK
|
302,000,000
SEK
|
— | — |
48,000,000
SEK
|
358,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Dividends recognised as distributions to owners | — | — | — | — | — |
96,000,000
SEK
|
— | — |
99,000,000
SEK
|
— |
96,000,000
SEK
|
3,000,000
SEK
|
90,000,000
SEK
|
— | — | — | — |
1,000,000
SEK
|
90,000,000
SEK
|
— | — | — |
91,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through other changes, equity | — | — | — | — | — |
–
SEK
|
— | — |
37,000,000
SEK
|
— | — |
37,000,000
SEK
|
–
SEK
|
— | — | — | — |
35,000,000
SEK
|
— | — | — | — |
35,000,000
SEK
|
— | — | — | — | — | — | — | — |
| Increase (decrease) through treasury share transactions, equity | — | — | — | — | — |
10,000,000
SEK
|
— | — |
10,000,000
SEK
|
— |
10,000,000
SEK
|
— |
6,000,000
SEK
|
— | — | — | — | — |
6,000,000
SEK
|
— | — | — |
6,000,000
SEK
|
— | — | — | — | — | — | — | — |