Analysis Of Income And Expense [Abstract]

FLSmidth & Co. - Filing #1436993

Concept	2021-01-01 to 2021-03-31	2021-01-01 to 2021-03-31	2021-01-01 to 2021-03-31	2021-01-01 to 2021-03-31	2021-01-01 to 2021-03-31	2021-01-01 to 2021-03-31	2021-01-01 to 2021-03-31	2020-01-01 to 2020-03-31	2020-01-01 to 2020-03-31	2020-01-01 to 2020-03-31	2020-01-01 to 2020-03-31	2020-01-01 to 2020-03-31	2020-01-01 to 2020-03-31	2020-01-01 to 2020-03-31
Analysis of income and expense [abstract]
Revenue [abstract]
Revenue	—	—	3,713,000,000 DKK	—	—	—	—	—	—	—	—	4,525,000,000 DKK	—	—
Material income and expense [abstract]
Other operating income (expense)	—	—	5,000,000 DKK	—	—	—	—	—	—	—	—	12,000,000 DKK	—	—
Selling, general and administrative expense [abstract]
Selling expense	—	—	315,000,000 DKK	—	—	—	—	—	—	—	—	378,000,000 DKK	—	—
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of associates accounted for using equity method	—	—	1,000,000 DKK	—	—	—	—	—	—	—	—	1,000,000 DKK	—	—
Income tax relating to components of other comprehensive income [abstract]
Income tax relating to components of other comprehensive income	2,000,000 DKK	—	2,000,000 DKK	—	2,000,000 DKK	—	—	—	0 DKK	0 DKK	—	0 DKK	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	62,000,000 DKK	0 DKK	400,000,000 DKK	358,000,000 DKK	399,000,000 DKK	1,000,000 DKK	21,000,000 DKK	335,000,000 DKK	98,000,000 DKK	269,000,000 DKK	2,000,000 DKK	267,000,000 DKK	0 DKK	32,000,000 DKK
Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	—	—	399,000,000 DKK	—	—	—	—	—	—	—	—	269,000,000 DKK	—	—
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	—	—	1,000,000 DKK	—	—	—	—	—	—	—	—	2,000,000 DKK	—	—