| Other provisions [member] | ||||||||
| Legal proceedings provision [member] | Onerous contracts provision [member] | Provision for decommissioning, restoration and rehabilitation costs [member] | Other environment related provision [member] | Provision for taxes other than income tax [member] | Miscellaneous other provisions [member] | |||
| Disclosure of other provisions [line items] | ||||||||
| Reconciliation of changes in other provisions [abstract] | ||||||||
| Other provisions | ||||||||
| Changes in other provisions [abstract] | ||||||||
| Additional provisions, other provisions [abstract] | ||||||||
| New provisions, other provisions | ||||||||
| Increase in existing provisions, other provisions | ||||||||
| Additional provisions, other provisions | ||||||||
| Acquisitions through business combinations, other provisions | ||||||||
| Provision used, other provisions | ||||||||
| Unused provision reversed, other provisions | ||||||||
| Increase through adjustments arising from passage of time, other provisions | ||||||||
| Increase (decrease) through change in discount rate, other provisions | ||||||||
| Increase (decrease) through net exchange differences, other provisions | ||||||||
| Decrease through loss of control of subsidiary, other provisions | ||||||||
| Increase (decrease) through transfers and other changes, other provisions | ||||||||
| Decrease through transfer to liabilities included in disposal groups classified as held for sale, other provisions | ||||||||
| Increase (decrease) in other provisions | ||||||||
| Other provisions | ||||||||
| Description of nature of obligation, other provisions | ||||||||
| Description of expected timing of outflows, other provisions | ||||||||
| Indication of uncertainties of amount or timing of outflows, other provisions | ||||||||
| Description of major assumptions made concerning future events, other provisions | ||||||||
| Activo reconocido por reembolsos esperados, otras provisiones | ||||||||
| Reembolso esperado, otras provisiones | ||||||||