Specific and non-specific borrowing costs are capitalized to qualifying assets throughout the period required for completion and construction until they are ready for their intended use. Non-specific borrowing costs are capitalized in the same manner to the same investment in qualifying assets, or portion thereof, which was not financed with specific credit by means of a rate which is the weighted-average cost of the credit sources which were not specifically capitalized. Foreign currency differences from credit in foreign currency are capitalized if they are considered an adjustment of interest costs. Other borrowing costs are expensed as incurred. Income earned on the temporary investment of specific credit received for investing in a qualifying asset is deducted from the borrowing costs eligible for capitalization.