Statement Of Comprehensive Income [Abstract]

JSW S.A. - Filing #6274191

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)	1 546,0 PLN	- PLN	1 537,4 PLN	86,000,000 PLN	- PLN	- PLN	1 546,0 PLN	- PLN	6,289,000,000 PLN	- PLN	6,289,000,000 PLN	6,496,000,000 PLN	207,000,000 PLN	- PLN
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract]
Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans	—	—	190,000,000 PLN	—	—	—	—	—	—	—	—	444,000,000 PLN	—	—
Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract]
Cash flow hedges [abstract]
Other comprehensive income, net of tax, cash flow hedges	—	—	221,000,000 PLN	—	—	—	—	—	—	—	—	315,000,000 PLN	—	—
Other comprehensive income	189,000,000 PLN	- PLN	31,000,000 PLN	1,000,000 PLN	- PLN	221,000,000 PLN	32,000,000 PLN	- PLN	122,000,000 PLN	315,000,000 PLN	437,000,000 PLN	129,000,000 PLN	7,000,000 PLN	- PLN
Comprehensive income	1 564,9 PLN	- PLN	1 534,3 PLN	85,000,000 PLN	- PLN	221,000,000 PLN	1 542,8 PLN	- PLN	6,167,000,000 PLN	315,000,000 PLN	5,852,000,000 PLN	6,367,000,000 PLN	200,000,000 PLN	- PLN
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	1 542,8 PLN	—	—	—	—	—	—	—	—	6,167,000,000 PLN	—	—
Comprehensive income, attributable to non-controlling interests	—	—	85,000,000 PLN	—	—	—	—	—	—	—	—	200,000,000 PLN	—	—