Analysis Of Income And Expense [Abstract]

mBank S.A. - Filing #6276412

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	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	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]
Interest income	4 688 353 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	5 071 664 PLN	—	—	—	—	—	—	—	—	—
Dividend income	4 926 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	4 220 PLN	—	—	—	—	—	—	—	—	—
Material income and expense [abstract]
Interest expense	679 053 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1 068 892 PLN	—	—	—	—	—	—	—	—	—
Interest income (expense)	4 009 300 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	4 002 772 PLN	—	—	—	—	—	—	—	—	—
Miscellaneous other operating income	218 052 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	234 487 PLN	—	—	—	—	—	—	—	—	—
Miscellaneous other operating expense	234 820 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	307 722 PLN	—	—	—	—	—	—	—	—	—
Fee and commission income (expense) [abstract]
Fee and commission income [abstract]
Fee and commission income	2 244 561 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	2 010 656 PLN	—	—	—	—	—	—	—	—	—
Fee and commission expense [abstract]
Fee and commission expense	736 276 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	740 039 PLN	—	—	—	—	—	—	—	—	—
Fee and commission income (expense)	1 508 285 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1 270 617 PLN	—	—	—	—	—	—	—	—	—
Expenses by nature [abstract]
Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract]
Depreciation and amortisation expense [abstract]
Depreciation and amortisation expense	430 628 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	375 498 PLN	—	—	—	—	—	—	—	—	—
Tax expense other than income tax expense	531 379 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	458 658 PLN	—	—	—	—	—	—	—	—	—
Disclosure of attribution of expenses by nature to their function [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of attribution of expenses by nature to their function [abstract]
Disclosure of attribution of expenses by nature to their function [line items]
Miscellaneous other comprehensive income [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations and hedges of net investments in foreign operations [abstract]
Other comprehensive income, net of tax, exchange differences on translation of foreign operations	3 043 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	32,000 PLN	—	—	—	—	—	—	—	—	—
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	511 548 PLN	6 252 PLN	- PLN	103 831 PLN	111 012 PLN	299 988 PLN	- PLN	- PLN	- PLN	- PLN	3 043 PLN	74,000 PLN	- PLN	511 622 PLN	2 002 PLN	32,000 PLN	972 222 PLN	98,000 PLN	972 124 PLN	71 657 PLN	- PLN	- PLN	35 499 PLN	- PLN	- PLN	1 010 350 PLN	- PLN	- PLN
Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	511 622 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	972 222 PLN	—	—	—	—	—	—	—	—	—
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	74,000 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	98,000 PLN	—	—	—	—	—	—	—	—	—