| Investment financial assets | 31 December 2019 | 31 December 2018 | ||||||
| at amortized cost | at fair value through other compre-hensive income | at fair value through profit or loss | Total | at amortized cost | at fair value through other compre-hensive income | at fair value through profit or loss | Total | |
| Equity instruments | n/a | 518 | 845 | 1,363 | n/a | 522 | 1,220 | 1,742 |
| Participation units and investment certificates | n/a | n/a | 4,820 | 4,820 | n/a | n/a | 4,298 | 4,298 |
| Debt securities | 35,930 | 54,693 | 4,602 | 95,225 | 34,652 | 38,215 | 12,176 | 85,043 |
| Government securities | 29,187 | 37,476 | 4,393 | 71,056 | 27,501 | 26,167 | 11,986 | 65,654 |
| Domestic | 28,985 | 35,373 | 4,255 | 68,613 | 27,349 | 23,419 | 10,793 | 61,561 |
| Fixed rate | 25,785 | 22,820 | 3,054 | 51,659 | 24,074 | 10,745 | 8,893 | 43,712 |
| Floating rate | 3,200 | 12,553 | 1,201 | 16,954 | 3,275 | 12,674 | 1,900 | 17,849 |
| Foreign | 202 | 2,103 | 138 | 2,443 | 152 | 2,748 | 1,193 | 4,093 |
| Fixed rate | 202 | 2,103 | 138 | 2,443 | 152 | 2,748 | 1,193 | 4,093 |
| Other | 6,743 | 17,217 | 209 | 24,169 | 7,151 | 12,048 | 190 | 19,389 |
| Fixed rate | 892 | 9,032 | 40 | 9,964 | 1,323 | 4,501 | 39 | 5,863 |
| Floating rate | 5,851 | 8,185 | 169 | 14,205 | 5,828 | 7,547 | 151 | 13,526 |
| Other, including: | 10,008 | - | - | 10,008 | 10,582 | - | - | 10,582 |
| Buy-sell-back transactions | 4,064 | - | - | 4,064 | 3,278 | - | - | 3,278 |
| Term deposits with credit institutions | 1,454 | - | - | 1,454 | 2,769 | - | - | 2,769 |
| Loans | 4,490 | - | - | 4,490 | 4,535 | - | - | 4,535 |
| Investment financial assets, total | 45,938 | 55,211 | 10,267 | 111,416 | 45,234 | 38,737 | 17,694 | 101,665 |
| Equity instruments measured at fair value through other comprehensive income | 31 December 2019 | 31 December 2018 | ||
| Fair value | Dividends recognized in the period | Fair value | Dividends recognized in the period | |
| Grupa Azoty SA | 232 | - | 257 | 10 |
| Biuro Informacji Kredytowej SA | 177 | 20 | 173 | 19 |
| PSP sp. z o.o. | 50 | - | 22 | - |
| Polimex-Mostostal SA | 29 | - | 38 | - |
| Krajowa Izba Rozliczeniowa SA | 14 | 1 | 13 | 1 |
| Other | 16 | 1 | 19 | - |
| Equity instruments measured at fair value through other comprehensive income, total | 518 | 22 | 522 | 30 |