| r0.010 | cbi_a3.root/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | N/A | cbi_BA:x2 | N/A | N/A | N/A | N/A | N/A | N/A |
| 380.010 | Total assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | N/A | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x120 | N/A |
| 010.010 | Cash, cash balances at central banks and other demand deposits/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x1 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x6 | N/A |
| 020.010 | Cash on hand/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x1 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x166 | N/A |
| 030.010 | Cash balances at central banks/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x1 | cbi_BA:x2 | cbi_CT:x1 | N/A | cbi_MC:x125 | N/A | cbi_MC:x112 | N/A |
| 040.010 | Other demand deposits/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x1 | cbi_BA:x2 | cbi_CT:x3 | N/A | cbi_MC:x125 | N/A | cbi_MC:x112 | N/A |
| 050.010 | Financial assets held for trading/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x2 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x54 | N/A |
| 060.010 | Derivatives/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x2 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x122 | N/A |
| 070.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x2 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 080.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x2 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 090.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x2 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 091.010 | Trading financial assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x10 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x54 | N/A |
| 092.010 | Derivatives/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x10 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x122 | N/A |
| 093.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x10 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 094.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x10 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 095.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x10 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 096.010 | Non-trading financial assets mandatorily at fair value through profit or loss/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x11 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x116 | N/A |
| 097.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x11 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 098.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x11 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 099.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x11 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 100.010 | Financial assets designated at fair value through profit or loss/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x12 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x116 | N/A |
| 110.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x12 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 120.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x12 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 130.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x12 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 141.010 | Financial assets at fair value through other comprehensive income/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x13 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x116 | N/A |
| 142.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x13 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 143.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x13 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 144.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x13 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 171.010 | Non-trading non-derivative financial assets measured at fair value through profit or loss/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x14 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x116 | N/A |
| 172.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x14 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 173.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x14 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 174.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x14 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 175.010 | Non-trading non-derivative financial assets measured at fair value to equity/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x15 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x116 | N/A |
| 176.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x15 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 177.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x15 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 178.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x15 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 181.010 | Financial assets at amortised cost/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x3 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x54 | N/A |
| 182.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x3 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 183.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x3 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 231.010 | Non-trading non-derivative financial assets measured at a cost-based method/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x16 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x116 | N/A |
| 390.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x16 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 232.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x16 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 233.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x16 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 234.010 | Other non-trading non-derivative financial assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x17 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x116 | N/A |
| 235.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x17 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 236.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x17 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x124 | N/A |
| 237.010 | Loans and advances/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x17 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x112 | N/A |
| 240.010 | Derivatives – Hedge accounting/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x18 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x122 | N/A |
| 250.010 | Fair value changes of the hedged items in portfolio hedge of interest rate risk/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | cbi_AP:x1 | N/A | cbi_MC:x174 | cbi_MC:x167 | cbi_MC:x173 |
| 260.010 | Investments in subsidiaries, joint ventures and associates/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x19 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x123 | N/A |
| 270.010 | Tangible assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x117 | N/A |
| 280.010 | Property, plant and equipment/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x5 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x117 | N/A |
| 290.010 | Investment property/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x21 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x117 | N/A |
| 300.010 | Intangible assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x118 | N/A |
| 310.010 | Goodwill/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x172 | N/A |
| 320.010 | Other intangible assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x121 | N/A |
| 330.010 | Tax assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x169 | N/A |
| 340.010 | Current tax assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x170 | N/A |
| 350.010 | Deferred tax assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x171 | N/A |
| 360.010 | Other assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x4 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x119 | N/A |
| 370.010 | Non-current assets and disposal groups classified as held for sale/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_PL:x20 | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x120 | N/A |
| 375.010 | (-) Haircuts for trading assets at fair value/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | N/A | cbi_BA:x2 | N/A | N/A | N/A | N/A | cbi_MC:x168 | N/A |