Statement Of Financial Position [Abstract]

KGHM Polska Miedź S.A. - Filing #6273247

Concept	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	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 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31	As at 2018-12-31
Statement of financial position [abstract]
Assets [abstract]
Deferred tax assets	—	—	—	—	—	—	193,000,000 PLN	—	—	—	—	157,000,000 PLN	—	—	—	—	—	—	—	—	—
Cash and cash equivalents	—	—	—	—	—	—	2 522 PLN	—	—	—	—	1 016 PLN	—	—	—	—	—	—	957,000,000 PLN	—	—
Assets	—	—	—	—	—	—	42 780 PLN	—	—	—	—	39 409 PLN	—	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	—	—	—	—	—	—	2 000 PLN	—	—	—	—	2 000 PLN	—	—	—	—	—	—	—	—	—
Retained earnings	—	—	—	—	—	—	18 694 PLN	—	—	—	—	16 894 PLN	—	—	—	—	—	—	—	—	—
Other reserves	—	—	—	—	—	—	1 728 PLN	—	—	—	—	1 954 PLN	—	—	—	—	—	—	—	—	—
Equity attributable to owners of parent	—	—	—	—	—	—	20 992 PLN	—	—	—	—	20 110 PLN	—	—	—	—	—	—	—	—	—
Non-controlling interests	—	—	—	—	—	—	89,000,000 PLN	—	—	—	—	92,000,000 PLN	—	—	—	—	—	—	—	—	—
Equity	1 430 PLN	18 694 PLN	89,000,000 PLN	20 992 PLN	2 000 PLN	1 728 PLN	21 081 PLN	738,000,000 PLN	20 110 PLN	92,000,000 PLN	1 954 PLN	20 202 PLN	16 894 PLN	2 000 PLN	2 005 PLN	444,000,000 PLN	92,000,000 PLN	19 133 PLN	19 225 PLN	2 000 PLN	15 572 PLN
Liabilities [abstract]
Deferred tax liabilities	—	—	—	—	—	—	442,000,000 PLN	—	—	—	—	445,000,000 PLN	—	—	—	—	—	—	—	—	—
Liabilities included in disposal groups classified as held for sale	—	—	—	—	—	—	5,000,000 PLN	—	—	—	—	- PLN	—	—	—	—	—	—	—	—	—
Liabilities	—	—	—	—	—	—	21 699 PLN	—	—	—	—	19 207 PLN	—	—	—	—	—	—	—	—	—
Equity and liabilities	—	—	—	—	—	—	42 780 PLN	—	—	—	—	39 409 PLN	—	—	—	—	—	—	—	—	—