| Group [member] | Company [member] | ||
| Statement of cash flows [abstract] | |||
| Cash flows from (used in) operating activities [abstract] | |||
| Classes of cash receipts from operating activities [abstract] | |||
| Receipts from sales of goods and rendering of services | |||
| Receipts from royalties, fees, commissions and other revenue | |||
| Other cash receipts from operating activities | |||
| Classes of cash payments from operating activities [abstract] | |||
| Payments to suppliers for goods and services | |||
| Payments to and on behalf of employees | |||
| Other cash payments from operating activities | |||
| Cash generated from (used in) operating activities | |||
| Dividends paid | |||
| Dividends received | |||
| Interest paid | |||
| Interest received | |||
| Income taxes refund (paid) | |||
| Other cash inflows (outflows) from operating activities | |||
| Net cash flows from (used in) operating activities | |||
| Cash flows from (used in) investing activities [abstract] | |||
| Proceeds from disposal of subsidiaries | |||
| Acquisition and subscription of shares in subsidiaries | |||
| Proceeds from disposal of joint ventures | |||
| Acquisition and subscription of shares in joint ventures | |||
| Other cash receipts from sales of equity or debt instruments of other entities | |||
| Other cash payments to acquire equity or debt instruments of other entities | |||
| Proceeds from sales of property, plant and equipment | |||
| Purchase of property, plant and equipment | |||
| Proceeds from sales of intangible assets | |||
| Purchase of intangible assets | |||
| Proceeds from sales of other long-term assets | |||
| Purchase of other long-term assets | |||
| Cash advances and loans made to other parties | |||
| Cash receipts from repayment of advances and loans made to other parties | |||
| Cash payments for futures contracts, forward contracts, option contracts and swap contracts | |||
| Cash receipts from futures contracts, forward contracts, option contracts and swap contracts | |||
| Dividends received | |||
| Interest received | |||
| Other cash inflows (outflows) from investing activities | |||
| Net cash flows from (used in) investing activities | |||
| Cash flows from (used in) financing activities [abstract] | |||
| Proceeds from issuing shares | |||
| Proceeds from issuing other equity instruments | |||
| Payments to acquire or redeem entity's shares | |||
| Payments to acquire other equity instruments | |||
| Proceeds from borrowings | |||
| Repayments of borrowings | |||
| Repayment of loan from associate | |||
| Payments of finance lease liabilities | |||
| Dividends paid | |||
| Interest paid | |||
| Other cash inflows (outflows) from financing activities | |||
| Net cash flows from (used in) financing activities | |||
| Net increase (decrease) in cash and cash equivalents before effect of exchange rate changes | |||
| Effect of exchange rate changes on cash and cash equivalents | |||
| Net increase (decrease) in cash and cash equivalents | |||
| Cash and cash equivalents at beginning of period | |||
| Cash and cash equivalents at end of period | |||