Statement Of Changes In Equity [Abstract]

Ferrum S.A. - Filing #6218877

Concept	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	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	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	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	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	96 247 PLN	1 220 PLN	—	—	118 060 PLN	—	118 060 PLN	34 141 PLN	—	0 PLN	178 946 PLN	—	—	—	102 599 PLN	0 PLN	111 995 PLN	178 946 PLN	—	1 507 PLN	34 141 PLN	—	—	111 995 PLN	—	—	—	178 946 PLN	1 866 PLN	93 723 PLN	121 230 PLN	0 PLN	34 141 PLN	121 230 PLN
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	0 PLN	—	—	0 PLN	6 352 PLN	—	0 PLN	—	—	0 PLN	—	—	6 352 PLN	6 352 PLN	8 876 PLN	—	—	—	—	8 876 PLN	—	—	0 PLN	0 PLN	—	0 PLN	0 PLN	8 876 PLN	—	—	—	—	—	—	—
Other comprehensive income	0 PLN	—	—	287,000 PLN	287,000 PLN	—	0 PLN	—	—	0 PLN	—	—	287,000 PLN	0 PLN	359,000 PLN	—	—	—	—	0 PLN	—	—	359,000 PLN	0 PLN	—	0 PLN	0 PLN	359,000 PLN	—	—	—	—	—	—	—
Comprehensive income	0 PLN	—	—	287,000 PLN	6 065 PLN	—	0 PLN	—	—	0 PLN	—	—	6 065 PLN	6 352 PLN	9 235 PLN	—	—	—	—	8 876 PLN	—	—	359,000 PLN	0 PLN	—	0 PLN	0 PLN	9 235 PLN	—	—	—	—	—	—	—
Increase (decrease) in equity	0 PLN	—	—	287,000 PLN	6 065 PLN	—	0 PLN	—	—	0 PLN	—	—	6 065 PLN	6 352 PLN	9 235 PLN	—	—	—	—	8 876 PLN	—	—	359,000 PLN	0 PLN	—	0 PLN	0 PLN	9 235 PLN	—	—	—	—	—	—	—