Statement Of Comprehensive Income [Abstract]

Ferrum S.A. - Filing #6267275

Concept	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	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31
Statement of comprehensive income [abstract]
Profit (loss)	8 876 PLN	0 PLN	8 876 PLN	0 PLN	0 PLN	8 876 PLN	0 PLN	0 PLN	0 PLN	7 406 PLN	7 406 PLN	7 406 PLN	0 PLN	0 PLN
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	—	—	443,000 PLN	—	—	—	—	—	—	—	—	155,000 PLN	—	—
Other comprehensive income that will not be reclassified to profit or loss, before tax	—	—	443,000 PLN	—	—	—	—	—	—	—	—	155,000 PLN	—	—
Other comprehensive income that will be reclassified to profit or loss, before tax	—	—	0 PLN	—	—	—	—	—	—	—	—	0 PLN	—	—
Other comprehensive income, before tax	—	—	443,000 PLN	—	—	—	—	—	—	—	—	155,000 PLN	—	—
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	—	84,000 PLN	—	—	—	—	—	—	—	—	29,000 PLN	—	—
Other comprehensive income	0 PLN	0 PLN	359,000 PLN	0 PLN	0 PLN	359,000 PLN	359,000 PLN	126,000 PLN	0 PLN	126,000 PLN	0 PLN	126,000 PLN	0 PLN	0 PLN
Comprehensive income	8 876 PLN	0 PLN	9 235 PLN	0 PLN	0 PLN	9 235 PLN	359,000 PLN	126,000 PLN	0 PLN	7 532 PLN	7 406 PLN	7 532 PLN	0 PLN	0 PLN
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	9 235 PLN	—	—	—	—	—	—	—	—	7 532 PLN	—	—
Comprehensive income, attributable to non-controlling interests	—	—	0 PLN	—	—	—	—	—	—	—	—	0 PLN	—	—