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Costs (Details 6) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Costs |  |  |
Depreciation, depletion and amortization: - tangible assets | € 7,199 | € 7,308 | € 8,646
Depreciation, depletion and amortization: - intangible assets | 286 | 253 | 303
Depreciation and amortisation expense Before Adjustment | 7,485 | 7,561 | 8,949
- capitalized direct costs associated with self-constructed assets - tangible assets | (2) | (2) | (9)
Total Depreciation And Amortisation Expense | € 7,483 | € 7,559 | € 8,940

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