Statement Of Changes In Equity [Abstract]

SEB - Filing #5081258

Concept	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2024-12-31	2024-01-01 to 2024-12-31	As at 2024-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 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	2023-01-01 to 2023-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	179,000,000 SEK	—	182 409 SEK	—	21 942 SEK	1 816 SEK	—	—	—	44,000,000 SEK	231 148 SEK	—	25 204 SEK	19 780 SEK	—	221 775 SEK	—	175,000,000 SEK	—	179 023 SEK	—	—	21 942 SEK	1 191 SEK	14,000,000 SEK	—	62,000,000 SEK	204 141 SEK	20 439 SEK	175,000,000 SEK	21 942 SEK	20 439 SEK	160 297 SEK	160 995 SEK	21 942 SEK	1 575 SEK	204 141 SEK	175,000,000 SEK	877,000,000 SEK	62,000,000 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	—	—	—	—	35 865 SEK	35 865 SEK	—	—	—	—	—	—	38 116 SEK	—	—	—	—	—	38 116 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	4,000,000 SEK	—	625,000,000 SEK	—	—	—	5 987 SEK	58,000,000 SEK	—	—	5 424 SEK	—	—	1 092 SEK	—	659,000,000 SEK	—	0 SEK	—	—	385,000,000 SEK	—	—	—	49,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	4,000,000 SEK	—	625,000,000 SEK	—	—	35 865 SEK	41 853 SEK	58,000,000 SEK	—	—	5 424 SEK	—	—	37 024 SEK	—	659,000,000 SEK	—	0 SEK	—	38 116 SEK	385,000,000 SEK	—	—	—	49,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	—	—	—	—	23 709 SEK	23 709 SEK	—	—	—	—	—	—	14 195 SEK	—	—	—	—	—	14 195 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	—	—	—	—	—	—	3 838 SEK	3 838 SEK	—	—	—	—	—	—	845,000,000 SEK	—	—	—	—	—	845,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	—	—	—	—	540,000,000 SEK	540,000,000 SEK	—	—	—	—	—	—	146,000,000 SEK	—	—	—	—	—	146,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—