Statement Of Changes In Equity [Abstract]

KGHM Polska Miedź S.A. - Filing #6226567

Concept	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 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	As at 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	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	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 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	24 532 PLN	—	2 219 PLN	—	—	27 138 PLN	1 705 PLN	27 046 PLN	92,000,000 PLN	—	2 000 PLN	—	—	—	18 694 PLN	89,000,000 PLN	1 430 PLN	20 992 PLN	2 000 PLN	—	—	1 728 PLN	—	—	21 081 PLN	—	—	20 110 PLN	92,000,000 PLN	1 954 PLN	20 202 PLN	16 894 PLN	738,000,000 PLN	2 000 PLN
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	1,000,000 PLN	—	- PLN	—	- PLN	6 156 PLN	—	—	—	—	- PLN	—	6 155 PLN	6 156 PLN	1 797 PLN	—	—	—	—	—	1 800 PLN	- PLN	—	- PLN	- PLN	—	3,000,000 PLN	1 800 PLN	—	—	—	—	—	—	—
Other comprehensive income	1,000,000 PLN	—	275,000,000 PLN	—	491,000,000 PLN	216,000,000 PLN	—	—	—	—	- PLN	—	217,000,000 PLN	- PLN	918,000,000 PLN	—	—	—	—	—	- PLN	692,000,000 PLN	—	226,000,000 PLN	- PLN	—	- PLN	918,000,000 PLN	—	—	—	—	—	—	—
Comprehensive income	- PLN	—	275,000,000 PLN	—	491,000,000 PLN	6 372 PLN	—	—	—	—	- PLN	—	6 372 PLN	6 156 PLN	879,000,000 PLN	—	—	—	—	—	1 800 PLN	692,000,000 PLN	—	226,000,000 PLN	- PLN	—	3,000,000 PLN	882,000,000 PLN	—	—	—	—	—	—	—