Statement Of Changes In Equity [Abstract]

Sweco - Filing #679186

Concept	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	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	As at 2023-12-31	2023-01-01 to 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	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	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 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	—	10 595 SEK	—	—	6 931 SEK	—	450,000,000 SEK	—	5,000,000 SEK	—	121,000,000 SEK	10 590 SEK	—	3 088 SEK	9 943 SEK	—	—	—	—	—	521,000,000 SEK	4,000,000 SEK	6 208 SEK	121,000,000 SEK	9 939 SEK	3 088 SEK	—	—	5 311 SEK	75,000,000 SEK	3 088 SEK	8 604 SEK	8 594 SEK	10,000,000 SEK	121,000,000 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	1 667 SEK	—	1 667 SEK	– SEK	—	0 SEK	—	1 667 SEK	—	– SEK	—	—	– SEK	—	—	– SEK	– SEK	1 652 SEK	1 651 SEK	1,000,000 SEK	—	—	—	—	—	—	1 651 SEK	– SEK	—	—	—	—	—	—	—
Other comprehensive income	101,000,000 SEK	—	101,000,000 SEK	72,000,000 SEK	—	0 SEK	—	29,000,000 SEK	—	– SEK	—	—	– SEK	—	—	– SEK	446,000,000 SEK	486,000,000 SEK	39,000,000 SEK	1,000,000 SEK	—	—	—	—	—	—	485,000,000 SEK	– SEK	—	—	—	—	—	—	—
Comprehensive income	1 566 SEK	—	1 566 SEK	7 2 SEK	—	0 SEK	—	1 638 SEK	—	– SEK	—	—	– SEK	—	—	– SEK	4 46 SEK	2 138 SEK	1 690 SEK	2,000,000 SEK	—	—	—	—	—	—	2 136 SEK	– SEK	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	968,000,000 SEK	—	968,000,000 SEK	– SEK	—	0 SEK	—	968,000,000 SEK	—	– SEK	—	—	– SEK	—	—	– SEK	– SEK	880,000,000 SEK	876,000,000 SEK	4,000,000 SEK	—	—	—	—	—	—	876,000,000 SEK	– SEK	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	– SEK	—	2,000,000 SEK	– SEK	—	2,000,000 SEK	—	2,000,000 SEK	—	– SEK	—	—	– SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—