Statement Of Changes In Equity [Abstract]

Alfa Laval - Filing #702512

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	—	808,000,000 SEK	2 770 SEK	28,000,000 SEK	29 937 SEK	—	32 344 SEK	148,000,000 SEK	—	—	217,000,000 SEK	—	1 285 SEK	—	32 096 SEK	220,000,000 SEK	—	—	248,000,000 SEK	1 117 SEK	—	—	—	—	—	163,000,000 SEK	495,000,000 SEK	—	—	2 770 SEK	28 908 SEK	1 117 SEK	156,000,000 SEK	2 447 SEK	28 824 SEK	7,000,000 SEK	—	1 728 SEK	—	—	—	29 071 SEK	—	123,000,000 SEK	—	—	—	27 600 SEK	129,000,000 SEK	147,000,000 SEK	1 383 SEK	2 770 SEK	27 747 SEK	2,000,000 SEK	25 271 SEK	95,000,000 SEK	1 117 SEK	82,000,000 SEK	18,000,000 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	42,000,000 SEK	– SEK	—	—	—	—	4 759 SEK	—	—	– SEK	4 759 SEK	—	– SEK	—	– SEK	—	—	42,000,000 SEK	– SEK	—	—	– SEK	– SEK	4 801 SEK	27,000,000 SEK	3 580 SEK	—	—	– SEK	– SEK	—	—	—	—	—	—	—	– SEK	—	– SEK	– SEK	– SEK	—	27,000,000 SEK	—	3 553 SEK	3 553 SEK	– SEK	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	21,000,000 SEK	347,000,000 SEK	—	—	—	—	2 075 SEK	—	—	1 639 SEK	– SEK	—	443,000,000 SEK	—	340,000,000 SEK	—	—	– SEK	– SEK	—	—	21,000,000 SEK	– SEK	2 096 SEK	– SEK	2 256 SEK	—	—	2 365 SEK	345,000,000 SEK	—	—	—	—	—	—	—	125,000,000 SEK	—	590,000,000 SEK	– SEK	– SEK	—	11,000,000 SEK	—	2 245 SEK	– SEK	11,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	63,000,000 SEK	347,000,000 SEK	—	—	—	—	6 834 SEK	—	—	1 639 SEK	4 759 SEK	—	443,000,000 SEK	—	340,000,000 SEK	—	—	42,000,000 SEK	– SEK	—	—	21,000,000 SEK	– SEK	6 897 SEK	27,000,000 SEK	1 324 SEK	—	—	2 365 SEK	345,000,000 SEK	—	—	—	—	—	—	—	125,000,000 SEK	—	590,000,000 SEK	– SEK	– SEK	—	16,000,000 SEK	—	1 308 SEK	3 553 SEK	11,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity	24,000,000 SEK	– SEK	—	—	—	—	- SEK	—	—	– SEK	- SEK	—	– SEK	—	– SEK	—	—	24,000,000 SEK	– SEK	—	—	– SEK	– SEK	24,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—