Statement Of Changes In Equity [Abstract]

Alfa Laval - Filing #702508

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 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	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Dividends recognised as distributions to owners of parent	– SEK	– SEK	2,307,000,000 SEK	– SEK	2,307,000,000 SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	2,307,000,000 SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK
Dividends recognised as distributions to non-controlling interests	2,000,000 SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	2,000,000 SEK	– SEK	– SEK	– SEK	2,000,000 SEK	0 SEK	0 SEK	– SEK	– SEK	– SEK	– SEK	– SEK	0 SEK	– SEK	– SEK	– SEK	– SEK
Purchase of treasury shares	– SEK	– SEK	1,339,000,000 SEK	– SEK	1,339,000,000 SEK	– SEK	– SEK	– SEK	– SEK	– SEK	– SEK	1,339,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—