| Issued capital [member] | Retained earnings [member] | Treasury shares [member] | Capital reserve [member] | Hedging reserve [member] | Foreign currency translation reserve [member] | Reserve of share-based payments [member] | Revaluation surplus [member] | Statutory reserve [member] | Other non-distributable reserves [member] | Fair value reserves [member] | Consolidation reserve [member] | Warranty reserve [member] | Other distributable reserves [member] | Other reserves [member] | Equity attributable to owners of parent [member] | Non-controlling interests [member] | Equity, others components [member] | Total equity [member] | ||
| Components of equity | ||||||||||||||||||||
| Equity at beginning of period | ||||||||||||||||||||
| Impact of changes in accounting policies | ||||||||||||||||||||
| Equity at beginning of period, restated | ||||||||||||||||||||
| Changes in equity [abstract] | ||||||||||||||||||||
| Comprehensive income [abstract] | ||||||||||||||||||||
| Profit (loss) | ||||||||||||||||||||
| Total other comprehensive income | ||||||||||||||||||||
| Total comprehensive income | ||||||||||||||||||||
| Contributions by and distribution to owners of the company [abstract] | ||||||||||||||||||||
| Acquisition (dilution) of equity interest in subsidiaries | ||||||||||||||||||||
| Arising from conversion of Irredeemable Convertible Unsecured Loan Stock (ICULS) | ||||||||||||||||||||
| Dividends paid | ||||||||||||||||||||
| Issuance of shares | ||||||||||||||||||||
| Issue of convertible notes, net of tax | ||||||||||||||||||||
| Increase (decrease) through share-based payment transactions, equity | ||||||||||||||||||||
| Treasury shares transactions | ||||||||||||||||||||
| Other transactions with owners | ||||||||||||||||||||
| Increase (decrease) through other changes, equity | ||||||||||||||||||||
| Total increase (decrease) in equity | ||||||||||||||||||||
| Equity at end of period | ||||||||||||||||||||