Statement Of Changes In Equity [Abstract]

KGHM Polska Miedź S.A. - Filing #6273247

Concept	2020-01-01 to 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	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	As at 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	As at 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	As at 2019-12-31	As at 2019-12-31	As at 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 2019-12-31	As at 2019-12-31	As at 2019-12-31	2019-01-01 to 2019-12-31	As at 2019-12-31	2019-01-01 to 2019-12-31	2019-01-01 to 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 changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	1 430 PLN	—	18 694 PLN	89,000,000 PLN	20 992 PLN	2 000 PLN	—	1 728 PLN	—	—	21 081 PLN	—	—	20 110 PLN	—	—	738,000,000 PLN	1 954 PLN	92,000,000 PLN	—	—	20 202 PLN	16 894 PLN	—	2 000 PLN	—	—	444,000,000 PLN	2 005 PLN	92,000,000 PLN	19 133 PLN	19 225 PLN	2 000 PLN	15 572 PLN
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	- PLN	—	1 797 PLN	—	—	—	—	1 800 PLN	—	- PLN	- PLN	—	3,000,000 PLN	1 800 PLN	—	- PLN	1 421 PLN	—	—	—	1 421 PLN	- PLN	—	—	1 421 PLN	—	- PLN	- PLN	—	—	—	—	—	—	—
Other comprehensive income	692,000,000 PLN	—	918,000,000 PLN	—	—	—	—	- PLN	—	226,000,000 PLN	- PLN	—	- PLN	918,000,000 PLN	—	51,000,000 PLN	444,000,000 PLN	—	—	—	- PLN	- PLN	—	—	444,000,000 PLN	—	- PLN	393,000,000 PLN	—	—	—	—	—	—	—
Comprehensive income	692,000,000 PLN	—	879,000,000 PLN	—	—	—	—	1 800 PLN	—	226,000,000 PLN	- PLN	—	3,000,000 PLN	882,000,000 PLN	—	51,000,000 PLN	977,000,000 PLN	—	—	—	1 421 PLN	- PLN	—	—	977,000,000 PLN	—	- PLN	393,000,000 PLN	—	—	—	—	—	—	—