Disclosure Of Fair Value Measurement [Text Block]

mBank S.A. - Filing #6276422

Concept	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	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	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	As at 2020-01-01	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	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	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01	As at 2019-01-01
Disclosure of fair value measurement [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of assets [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of assets [abstract]
Disclosure of fair value measurement of assets [line items]
Assets	—	—	—	—	—	—	—	—	—	—	—	—	180 136 294 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	158 720 583 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Reconciliation of changes in fair value measurement, assets [abstract]
Disclosure of fair value measurement of liabilities [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of liabilities [abstract]
Disclosure of fair value measurement of liabilities [line items]
Liabilities	—	—	—	—	—	—	—	—	—	—	—	—	163 461 227 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	142 567 278 PLN	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Reconciliation of changes in fair value measurement, liabilities [abstract]
Disclosure of fair value measurement of equity [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of fair value measurement of equity [abstract]
Disclosure of fair value measurement of equity [line items]
Equity	1 153 753 PLN	1 934 PLN	101 325 PLN	419 130 PLN	9 911 964 PLN	16 673 133 PLN	169 468 PLN	103 831 PLN	1 230 724 PLN	17 570 PLN	2 392 PLN	3 417 567 PLN	16 675 067 PLN	185 333 PLN	1 153 753 PLN	9 826 282 PLN	1 316 424 PLN	- PLN	98 316 PLN	11 318 PLN	74 321 PLN	169 401 PLN	119 142 PLN	16 153 305 PLN	2 002 PLN	3 410 417 PLN	5 435 PLN	16 151 303 PLN	1 010 350 PLN	16 151 303 PLN	306 074 PLN	2 002 PLN	5 435 PLN	11 318 PLN	16 153 305 PLN	3 410 417 PLN	74 321 PLN	119 142 PLN	98 316 PLN	169 401 PLN	9 826 282 PLN	1 153 753 PLN	83 643 PLN	9 316 PLN	169 348 PLN	3 405 338 PLN	1 153 753 PLN	15 171 207 PLN	93 448 PLN	9 826 282 PLN	- PLN	145 978 PLN	306 100 PLN	2 100 PLN	15 169 107 PLN	5 467 PLN
Reconciliation of changes in fair value measurement, entity's own equity instruments [abstract]