| r0.010 | cbi_a112.root/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| 310.010 | Total equity and total liabilities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x8 | N/A | N/A | N/A | cbi_MC:x141 | N/A | N/A |
| 300.010 | Total equity/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | N/A | N/A | N/A | cbi_MC:x140 | N/A | N/A |
| 010.010 | Capital/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | cbi_MC:x142 | N/A | cbi_MC:x136 | N/A | N/A |
| 020.010 | Capital. Paid up/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | cbi_MC:x143 | N/A | cbi_MC:x136 | N/A | N/A |
| 030.010 | Unpaid capital which has been called up/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | cbi_MC:x186 | N/A | cbi_MC:x136 | N/A | N/A |
| 040.010 | Share premium/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x187 | N/A | N/A |
| 050.010 | Equity instruments issued other than capital/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | cbi_MC:x188 | N/A | cbi_MC:x136 | N/A | N/A |
| 060.010 | Equity component of compound financial instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | cbi_MC:x189 | N/A | cbi_MC:x136 | N/A | N/A |
| 070.010 | Other equity instruments issued/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | cbi_MC:x190 | N/A | cbi_MC:x136 | N/A | N/A |
| 080.010 | Other equity/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x191 | N/A | N/A |
| 090.010 | Accumulated other comprehensive income/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x192 | N/A | N/A |
| 095.010 | Items that will not be reclassified to profit and loss/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x193 | cbi_BT:x2 | N/A |
| 100.010 | Tangible assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x194 | cbi_BT:x2 | N/A |
| 110.010 | Intangible assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x195 | cbi_BT:x2 | N/A |
| 120.010 | Actuarial gains or loss on defined benefit pension plans/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x196 | cbi_BT:x2 | N/A |
| 122.010 | Non-current assets and disposal groups classified as held for sale/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x197 | cbi_BT:x2 | N/A |
| 124.010 | Share of other recognised income and expense of investments in subsidiaries, joint ventures and associates/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x198 | cbi_BT:x2 | N/A |
| 320.010 | Changes in fair value of equity instruments measured at fair value through other comprehensive income/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x199 | cbi_BT:x2 | N/A |
| 330.010 | Hedge ineffectiveness of fair value hedges for equity instruments measured at fair value through other comprehensive income/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x200 | cbi_BT:x2 | cbi_MC:x201 |
| 340.010 | Fair value changes of equity instruments measured at fair value through other comprehensive income [hedged item]/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | cbi_MC:x174 | cbi_MC:x199 | cbi_BT:x2 | cbi_MC:x201 |
| 350.010 | Fair value changes of equity instruments measured at fair value through other comprehensive income [hedging instrument]/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | cbi_MC:x202 | cbi_MC:x199 | cbi_BT:x2 | cbi_MC:x201 |
| 360.010 | Change in fair value of a financial liability at fair value through profit or loss that is attributable to changes in the credit risk of that liability/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x203 | cbi_BT:x2 | N/A |
| 128.010 | Items that may be reclassified to profit and loss/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x204 | cbi_BT:x3 | N/A |
| 130.010 | Hedges of net investments in foreign operations [effective portion]/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x192 | cbi_BT:x3 | cbi_MC:x205 |
| 140.010 | Foreign currency translation/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x206 | cbi_BT:x3 | N/A |
| 150.010 | Hedging derivatives. Cash flow hedges reserve (effective portion)/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x192 | cbi_BT:x3 | cbi_MC:x207 |
| 155.010 | Fair value changes of debt instruments measured at fair value through other comprehensive income/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x208 | cbi_BT:x3 | N/A |
| 165.010 | Hedging instruments [not designated elements]/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x209 | cbi_BT:x3 | N/A |
| 170.010 | Non-current assets and disposal groups classified as held for sale/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x210 | cbi_BT:x3 | N/A |
| 180.010 | Share of other recognised income and expense of investments in subsidiaries, joint ventures and associates/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x198 | cbi_BT:x3 | N/A |
| 190.010 | Retained earnings/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x137 | N/A | N/A |
| 200.010 | Revaluation reserves/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x138 | N/A | N/A |
| 201.010 | Tangible assets/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x211 | N/A | N/A |
| 202.010 | Equity instruments/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x212 | N/A | N/A |
| 203.010 | Debt securities/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x213 | N/A | N/A |
| 204.010 | Other/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x139 | N/A | N/A |
| 205.010 | Fair value reserves/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x214 | N/A | N/A |
| 206.010 | Hedges of net investments in foreign operations/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x214 | N/A | cbi_MC:x205 |
| 207.010 | Hedging derivatives. Cash flow hedges/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x214 | N/A | cbi_MC:x207 |
| 208.010 | Hedging derivatives. Other hedges/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x214 | N/A | cbi_MC:x216 |
| 209.010 | Non-trading non-derivative financial assets measured at fair value to equity/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x215 | N/A | N/A |
| 210.010 | Other reserves/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x217 | N/A | N/A |
| 215.010 | Funds for general banking risks [if presented within equity]/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x218 | N/A | N/A |
| 220.010 | Reserves or accumulated losses of investments in subsidaries, joint ventures and associates accounted for using the equity method/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x219 | N/A | N/A |
| 230.010 | Other/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x220 | N/A | N/A |
| 235.010 | First consolidation differences/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x221 | N/A | N/A |
| 240.010 | (-) Treasury shares/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x222 | N/A | N/A |
| 250.010 | Profit or loss attributable to Owners of the parent/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x144 | N/A | N/A |
| 260.010 | (-) Interim dividends/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x1 | N/A | N/A | cbi_MC:x223 | N/A | N/A |
| 270.010 | Minority interests [Non-controlling interests]/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x4 | N/A | N/A | cbi_MC:x140 | N/A | N/A |
| 280.010 | Accumulated Other Comprehensive Income/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x4 | N/A | N/A | cbi_MC:x192 | N/A | N/A |
| 290.010 | Other items/Carrying amount | cbi_met:mi25 | xbrli:monetaryItemType | instant | cbi_BA:x7 | cbi_BT:x4 | N/A | N/A | cbi_MC:x224 | N/A | N/A |