Profit (loss) before tax [abstract] Profit (loss) from operating activities [abstract] Net revenue [abstract] Operating expense [abstract] Finance income (cost) [abstract] Materials, services of third parties and subcontractors Net revenue Net revenue Finance income (cost) Gains (losses) on exchange differences on translation of foreign operations, net of tax [abstract] Profit (loss) from operating activities before interest, taxes, depreciation and amortisation expense, adjusted, classified as operating activities [abstract] Increase (decrease) in net working capital [abstract] Increase (decrease) in other working capital [abstract] Change in Contract assets and liabilities, provision for onerous contracts Increase (decrease) in net working capital Increase (decrease) in other working capital Purchase of interests in investments accounted for using equity method and cash advances and loans made to related parties Proceeds from sales of investments accounted for using equity method and cash receipts from repayment of advances and loans made to related parties Settlement of derivatives, classified as financing activities Increase (decrease) through transactions with owners, equity [abstract] Acquisitions and transactions with non-controlling interests Increase (decrease) through transactions with owners, equity Cash flows from (used in) operations before changes in working capital Cash and cash equivalents if different from statement of financial position at beginning of period Cash and cash equivalents if different from statement of financial position at end of period Accounts payable, accrued expenses and other current liabilities