(POS) Other changes in financial assets, classified as investing activities (POS) Other changes in financial assets, classified as investing activities (POS) Investment income, classified as operating activities (POS) Investment income, classified as operating activities Repayments from short-term investments Proceeds From Short Term Investments (POS) Proceeds from changes in ownership interests in subsidiaries and payments from changes in ownership interests in subsidiaries (POS) Proceeds from changes in ownership interests in subsidiaries and payments from changes in ownership interests in subsidiaries (POS) Cash transfers from (to) discontinued operations (POS) Cash transfers from (to) discontinued operations (POS) Plant and equipment (POS) Plant and equipment (POS) Increase (decrease) in cash and cash equivalents, continuing operations (POS) Increase (decrease) in cash and cash equivalents, continuing operations (POS) Work contracted out and other external expenses (POS) Work contracted out and other external expenses (POS) Other equipment (POS) Other equipment Operating expense Finance income (cost) (POS) Cash advances and loans made to other parties and cash receipts from repayment of advances and loans made to other parties, classified as investing activities (POS) Cash advances and loans made to other parties and cash receipts from repayment of advances and loans made to other parties, classified as investing activities Description Of Other Accounting Policies Relevant To Understanding Of Financial Statements [Text Block] Description Of Other Accounting Policies Relevant To Understanding Of Financial Statements Increase (decrease) in working capital Investments in short-term investments Payments For Short Term Investments Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans, excluding pension asset ceiling/minimum funding requirement (POS) Other comprehensive income, net of tax, gains (losses) on remeasurements of defined benefit plans, excluding pension asset ceiling/minimum funding requirement