Statement of financial position [abstract] Profit or loss [abstract] Statement of comprehensive income [abstract] Statement of cash flows [abstract] Statement of changes in equity [abstract] Statement of changes in equity [table] Statement of changes in equity [line items] Other reserves Raw materials and consumables used Other gains (losses) Components of equity [axis] Retrospective application and retrospective restatement [axis] Changes in equity [abstract] Depreciation and amortisation expense Increase through other contributions by owners, equity Decrease through other distributions to owners, equity Line items not dimensionally qualified placeholder Notes, accounting policies and mandatory tags – this item MUST be used as a starting point for markups of disclosures in the notes to the financial statements Explanation of change in name of reporting entity or other means of identification from end of preceding reporting period Domicile of entity Legal form of entity Country of incorporation Address of entity's registered office Principal place of business Description of nature of entity's operations and principal activities Name of ultimate parent of group Name of parent entity Disclosure of depreciation and amortisation expense [text block] Disclosure of impairment of assets [text block] Share premium Property, plant and equipment Assets [abstract] Investment property Intangible assets other than goodwill Goodwill Investments accounted for using equity method Deferred tax assets Current inventories Current trade receivables Current tax assets, current Non-current assets or disposal groups classified as held for sale or as held for distribution to owners Equity and liabilities [abstract] Issued capital Other non-current provisions Non-current financial liabilities Deferred tax liabilities Current financial liabilities Other current provisions Liabilities included in disposal groups classified as held for sale Revenue and other operating income Other income Other work performed by entity and capitalised Non-current assets Current assets Assets Equity attributable to owners of parent Non-current provisions Current provisions Equity and liabilities Non-current liabilities Equity Gross profit Profit (loss) from operating activities Finance income Finance costs Foreign exchange gain (loss) Share of profit (loss) of associates and joint ventures accounted for using equity method Tax expense (income) Profit (loss) from continuing operations Profit (loss) from discontinued operations Other adjustments to reconcile profit (loss) Increase (decrease) in working capital Interest received, classified as operating activities Dividends received, classified as operating activities Interest paid, classified as operating activities Income taxes paid (refund), classified as operating activities Cash flows from (used in) operating activities Purchase of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets Proceeds from disposals of property, plant and equipment, intangible assets other than goodwill, investment property and other non-current assets Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities Cash flows from losing control of subsidiaries or other businesses, classified as investing activities Purchase of other long-term assets, classified as investing activities Proceeds from sales of other long-term assets, classified as investing activities Cash flows from (used in) investing activities Proceeds from issuing shares Proceeds from non-current borrowings Repayments of non-current borrowings Cash flows from (used in) increase (decrease) in current borrowings Dividends paid to equity holders of parent, classified as financing activities Other comprehensive income [abstract] Other comprehensive income, before tax, gains (losses) on revaluation Adjustments for depreciation and amortisation expense and impairment loss (reversal of impairment loss) recognised in profit or loss Increase (decrease) through conversion of convertible instruments, equity Issued capital [member] Other equity interest [member] Increase (decrease) due to changes in accounting policy [member] Increase (decrease) due to corrections of prior period errors [member] Increase (decrease) through transactions with owners, equity Issue of equity Dividends recognised as distributions to owners Increase (decrease) through changes in ownership interests in subsidiaries that do not result in loss of control, equity Increase (decrease) through share-based payment transactions, equity Increase (decrease) through other changes, equity Adjustments to reconcile profit (loss) other than changes in working capital Adjustments for decrease (increase) in inventories Adjustments for decrease (increase) in trade and other receivables Adjustments for decrease (increase) in other operating receivables Adjustments for increase (decrease) in trade and other payables Other inflows (outflows) of cash, classified as operating activities Other cash and cash equivalents Cash on hand Other current liabilities Other comprehensive income that will be reclassified to profit or loss, before tax Other cash receipts from operating activities Other cash payments from operating activities Cash and cash equivalents Current liabilities Cost of purchased energy sold Fuel expense Energy transmission charges Employee benefits expense Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss Profit (loss), attributable to owners of parent Basic earnings (loss) per share from continuing operations Diluted earnings (loss) per share from continuing operations Basic earnings (loss) per share Diluted earnings (loss) per share In accordance with IFRS 9 [member] Increase (decrease) due to application of IFRS 15 [member] Equity attributable to owners of parent [member] Equity [member] Other expenses, by nature Expenses, by nature Name of reporting entity or other means of identification Comprehensive income [abstract] Revaluation surplus Other non-current liabilities Procurements And Services The amount of expenses that the entity classifies as being other procurements and services. Services expense Disclosure of notes and other explanatory information [text block] Treasury shares [member] Increase (decrease) through treasury share transactions, equity Other operating income (expense) Share of other comprehensive income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss, net of tax Non-current contract assets Other non-current financial assets Non-current derivative financial assets Other non-current assets Trade and other current receivables Current receivables from taxes other than income tax Current contract assets Other current financial assets Current derivative financial assets Other equity interest Non-current government grants Non-current contract liabilities Non-current derivative financial liabilities Other non-current financial liabilities Current contract liabilities Current derivative financial liabilities Other current financial liabilities Other comprehensive income that will be reclassified to profit or loss, net of tax Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss Reclassification adjustments on cash flow hedges, before tax Reclassification adjustments on exchange differences on translation, before tax Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, net of tax Comprehensive income, attributable to owners of parent Other comprehensive income that will not be reclassified to profit or loss, net of tax Disclosure of general information about financial statements [text block] Revenue Treasury shares Non-current provisions for employee benefits Current provisions for employee benefits Finance income (cost) Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans Gains (losses) on exchange differences on translation, before tax Gains (losses) on cash flow hedges, before tax Other inflows (outflows) of cash, classified as investing activities Cash flows from (used in) financing activities Increase (decrease) in cash and cash equivalents before effect of exchange rate changes Effect of exchange rate changes on cash and cash equivalents Increase (decrease) in cash and cash equivalents Comprehensive income Other comprehensive income, before tax, gains (losses) from investments in equity instruments Current payables on social security and taxes other than income tax Disclosure of other assets [text block] Disclosure of financial assets [text block] Disclosure of financial liabilities [text block] Disclosure of contingent liabilities [text block] Gains (losses) on change in fair value of derivatives Impairment loss recognised in profit or loss, property, plant and equipment Impairment loss recognised in profit or loss, trade receivables Income tax relating to components of other comprehensive income that will be reclassified to profit or loss Increase (decrease) in equity Disclosure of other provisions, contingent liabilities and contingent assets [text block] Disclosure of basis of preparation of financial statements [text block] Disclosure of significant accounting policies [text block] Disclosure of changes in accounting policies [text block] Disclosure of entity's operating segments [text block] Disclosure of revenue [text block] Disclosure of employee benefits [text block] Disclosure of expenses by nature [text block] Disclosure of other operating expense [text block] Disclosure of finance income (cost) [text block] Disclosure of income tax [text block] Disclosure of earnings per share [text block] Disclosure of property, plant and equipment [text block] Disclosure of quantitative information about right-of-use assets [text block] Disclosure of investment property [text block] Disclosure of intangible assets [text block] Disclosure of goodwill [text block] Disclosure of deferred taxes [text block] Disclosure of investments accounted for using equity method [text block] Disclosure of derivative financial instruments [text block] Disclosure of other non-current assets [text block] Disclosure of inventories [text block] Disclosure of trade and other receivables [text block] Disclosure of cash and cash equivalents [text block] Disclosure of share capital, reserves and other equity interest [text block] Disclosure of government grants [text block] Disclosure of debt instruments [text block] Disclosure of provisions [text block] Disclosure of other non-current liabilities [text block] Disclosure of trade and other payables [text block] Disclosure of financial instruments [text block] Disclosure of financial risk management [text block] Disclosure of offsetting of financial assets and financial liabilities [text block] Disclosure of hedge accounting [text block] Disclosure of fair value measurement [text block] Disclosure of cash flow statement [text block] Disclosure of related party [text block] Disclosure of commitments and contingent liabilities [text block] Disclosure of auditors' remuneration [text block] Disclosure of information about employees [text block] Disclosure of events after reporting period [text block] Disclosure of subsidiaries [text block] Disclosure of authorisation of financial statements [text block] Revaluation Net Surplus A component of equity representing the net accumulated revaluation surplus on the revaluation of assets recognised in other comprehensive income. Other comprehensive income, before tax, cash flow hedges Other comprehensive income, before tax, exchange differences on translation Other Reclassifications On Exchange Differences On Translation Before Tax Represents the rest of the amount recognized in other comprehensive income for translation differences, before tax. Previously stated [member] Currently stated [member] Share Premium And Reserves A component of equity representing the share premium and reserves. Other Transactions With Shareholders And Owners The increase (decrease) in equity resulting from transactions with shareholders and owners that the entity does not separately disclose in the same statement or note. Profit For Year Attributed To Parent Company A component of equity representing the profit for the period of the parent. Interim Dividend A component of equity representing interim dividend. Trade Payables And Other Current Liabilities The amount of current trade payables and current other payables and other current liabilities. Other Reclassification Adjustments Before Tax Represents the other reclassification adjustments, before tax. Other Comprehensive Income Before Tax Debt Instruments Measured At Fair Value The amount of other comprehensive income from debt instruments at fair value that will be reclassified to income, before tax. Other Changes In Equity The increase (decrease) in equity resulting from changes in equity that the entity does not separately disclose in the same statement or note. Other Changes The increase (decrease) in equity resulting from other changes in equity that the entity does not separately disclose in the same statement or note. Other Cash Flows From Used In Operating Activities The cash inflow (outflow) from operating activities that the entity does not separately disclose in the same statement or note. Gross Profit From Operations The profit (loss) from operating activities of the entity excluding the amount of depreciation expense, amortisation expense and impairment loss (reversal of impairment loss) recognised in profit or loss. Other Variable Procurements And Services The amount of expenses that the entity classifies as being other variable procurements and services. Net Income Expense From Commodity Derivatives The gains (losses) that the entity classifies as income and expenses for derivatives of energy materials. Net Income Expense From Financial Derivatives The gains (losses) that the entity classifies as income and expensesfrom derivate financial instruments. Current Payables From Taxes Other Than Income Tax The amount of current payables for taxes other than incomes tax. Depreciation Amortisation And Impairment Loss Reversal Of Impairment Loss Recognised In Profit Or Loss Non Financial Assets The amount of depreciation expense and amortisation expense recognised in profit or loss. Impairment Loss Reversal Of Impairment Loss Recognised In Profit Or Loss Financial Assets The amount of impairment loss (reversal of impairment loss) recognised in profit or loss. Purchase Of Investments The cash outflow for the purchases of long-term assets classified as investing activities. Disclosure Of Depreciation And Amortisation Expense And Impairment Of Assets Explanatory [text block] The disclosure of depreciation and amortisation expense and impairment of assets explanatory. Disclosure Of Industry Regulation Explanatory [text block] The disclosure of industry regulation explanatory. Disclosure Of Net Income Expense From Commodity Derivatives Explanatory [text block] The disclosure of derivative financial instruments of commodities. Disclosure Of Profit Loss Of Associates And Joint Ventures Accounted For Using Equity Method Explanatory [text block] The disclosure of net result investments accounted for using the equity method. Disclosure Of Contingent Assets And Liabilities Explanatory [text block] The disclosure of contingent assets and liabilities. Disclosure Of Future Changes In Accounting Policies Explanatory [text block] The disclosure of future changes made to accounting policies by the entity. Disclosure Of Contract Assets And Liabilities Explanatory [text block] The disclosure of contractual assets. Disclosure Of Other Noncurrent Financial Assets Explanatory [text block] The disclosure of other non current financial assets. Disclosure Of Other Current Financial Assets Explanatory [text block] The disclosure of other current financial assets. Rest Of Other Comprehensive Income That Will Not Be Reclassified To Profit Or Loss Before Tax The rest of the amounts of other comprehensive income that will not be reclassified to results, before tax. Disclosure Of Changes In Significant Investments In Subsidiaries Explanatory [text block] The disclosure of investments in subsidiaries. Other Reclassifications On Cash Flow Hedges Before Tax Represents the rest of the amount recognized in other comprehensive income for cash flow hedges, before tax. Share Premium Reserves And Interim Dividend [member] This member stands for a component of equity representing share premium reserves and interim dividend. Profit For Period [member] This member stands for a component of equity representing profit for the period. Statement Of Comprehensive Income [table] Table in which information about Statement of Other Comprehensive Income is revealed. Revaluation Net Surplus [member] This member stands for a component of equity representing the net accumulated revaluation surplus on the revaluation of assets recognised in other comprehensive income. Other Reclassifications On Share Of Other Comprehensive Income Of Associates And Joint Ventures Accounted For Using Equity Method Net Of Tax Represents the rest of the amount of other comprehensive income, associated companies and joint ventures accounted for using the equity method, net of tax. Rest Of Other Comprehensive Income Before Tax The rest of the amount of other comprehensive income that will be reclassified to results, before tax. Gains Losses On Share Of Other Comprehensive Income Of Associates And Joint Ventures Accounted For Using Equity Method Net Of Tax The gains (losses) recognised in other comprehensive income of associates and joint ventures accounted for using the equity method that will be reclassified to profit or loss, net of tax. Proceeds From Disposals Of Investments The cash outflow for the purchases of long-term assets classified as investing activities. Disclosure Of Non Financial Information Explanatory [text block] The disclosure of other explanatory information as part of a complete set of financial statements. Disclosure Of Net Debt Explanatory [text block] The disclosure of net debt instruments. Disclosure Of Other Financial Liabilities Explanatory [text block] The disclosure of other financial liabilities. Disclosure Of Group Activity And Financial Statements Explanatory [text block] The disclosure of group activity and financial statements explanatory. Disclosure Of Procurements And Services [text block] The disclosure of procurements and services. Other Inflows Outflows Classified As Investing Activities Inflows (outflows) of cash from investing activities that the entity does not separately disclose in the same statement or note. Gains Losses On Debt Instruments Measured At Fair Value Before Tax The gains (losses) recognized in other comprehensive income from debt instruments at fair value before tax. Reclassification Adjustment On Debt Instruments Measured At Fair Value Before Tax The amount of reclassification adjustments related to debt instruments at fair value before tax. Other Reclassifications On Debt Instruments Measured At Fair Value Before Tax The rest of the amount of other comprehensive income related to debt instruments at fair value before tax. Other Reclassifications On Rest Of Other Comprehensive Income Before Tax The gains (losses) recognized in other comprehensive income that the entity does not disclose separately that will be reclassified to income net of tax. Other Gains Losses Before Tax The gains (losses) recognized in other comprehensive income that the entity does not disclose separately that will be reclassified to income net of tax. Represents the Reclassification adjustments of Associates and joint ventures accounted for using equity method, net of tax. Reclassification Adjustments On Share Of Other Comprehensive Income Of Associates And Joint Ventures Accounted For Using Equity Method Net Of Tax Profit (loss) Current tax liabilities, current Capital Increases Decreases The increase or decrease in equity resulting from an issue or reduction in issued capital. [Refer: Issued capital] Trade and other current payables Profit (loss), attributable to non-controlling interests Comprehensive income, attributable to non-controlling interests Non-controlling interests Non-controlling interests [member] Profit (loss) before tax Dividends paid to non-controlling interests, classified as financing activities