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	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	2,770,000,000 SEK	28,000,000 SEK	29,937,000,000 SEK	—	32,344,000,000 SEK	148,000,000 SEK	—	—	217,000,000 SEK	—	1,285,000,000 SEK	—	32,096,000,000 SEK	220,000,000 SEK	—	—	248,000,000 SEK	1,117,000,000 SEK	—	—	—	—	—	163,000,000 SEK	495,000,000 SEK	—	—	2,770,000,000 SEK	28,908,000,000 SEK	1,117,000,000 SEK	156,000,000 SEK	2,447,000,000 SEK	28,824,000,000 SEK	7,000,000 SEK	—	1,728,000,000 SEK	—	—	—	29,071,000,000 SEK	—	123,000,000 SEK	—	—	—	27,600,000,000 SEK	129,000,000 SEK	147,000,000 SEK	1,383,000,000 SEK	2,770,000,000 SEK	27,747,000,000 SEK	2,000,000 SEK	25,271,000,000 SEK	95,000,000 SEK	1,117,000,000 SEK	82,000,000 SEK	18,000,000 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	42,000,000 SEK	– SEK	—	—	—	—	4,759,000,000 SEK	—	—	– SEK	4,759,000,000 SEK	—	– SEK	—	– SEK	—	—	42,000,000 SEK	– SEK	—	—	– SEK	– SEK	4,801,000,000 SEK	27,000,000 SEK	3,580,000,000 SEK	—	—	– SEK	– SEK	—	—	—	—	—	—	—	– SEK	—	– SEK	– SEK	– SEK	—	27,000,000 SEK	—	3,553,000,000 SEK	3,553,000,000 SEK	– SEK	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	21,000,000 SEK	347,000,000 SEK	—	—	—	—	2,075,000,000 SEK	—	—	1,639,000,000 SEK	– SEK	—	443,000,000 SEK	—	340,000,000 SEK	—	—	– SEK	– SEK	—	—	21,000,000 SEK	– SEK	2,096,000,000 SEK	– SEK	2,256,000,000 SEK	—	—	2,365,000,000 SEK	345,000,000 SEK	—	—	—	—	—	—	—	125,000,000 SEK	—	590,000,000 SEK	– SEK	– SEK	—	11,000,000 SEK	—	2,245,000,000 SEK	– SEK	11,000,000 SEK	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	63,000,000 SEK	347,000,000 SEK	—	—	—	—	6,834,000,000 SEK	—	—	1,639,000,000 SEK	4,759,000,000 SEK	—	443,000,000 SEK	—	340,000,000 SEK	—	—	42,000,000 SEK	– SEK	—	—	21,000,000 SEK	– SEK	6,897,000,000 SEK	27,000,000 SEK	1,324,000,000 SEK	—	—	2,365,000,000 SEK	345,000,000 SEK	—	—	—	—	—	—	—	125,000,000 SEK	—	590,000,000 SEK	– SEK	– SEK	—	16,000,000 SEK	—	1,308,000,000 SEK	3,553,000,000 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	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—