Analysis Of Income And Expense [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
Analysis of income and expense [abstract]
Revenue [abstract]
Revenue	—	—	6 989,4 PLN	—	—	—	—	—	—	—	—	8 671,8 PLN	—	—
Material income and expense [abstract]
Selling, general and administrative expense [abstract]
Selling expense	—	—	2,885,000,000 PLN	—	—	—	—	—	—	—	—	2,615,000,000 PLN	—	—
Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract]
Share of profit (loss) of associates accounted for using equity method	—	—	1,000,000 PLN	—	—	—	—	—	—	—	—	3,000,000 PLN	—	—
Comprehensive income, continuing and discontinued operations [abstract]
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 owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	—	—	1 542,8 PLN	—	—	—	—	—	—	—	—	6,167,000,000 PLN	—	—
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	—	—	85,000,000 PLN	—	—	—	—	—	—	—	—	200,000,000 PLN	—	—